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ICSE Class X Notes 2019 : Computer Applications

41 pages, 77 questions, 1 questions with responses, 3 total responses,

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Looping Q.No : 1. // Program find sum of digits import java.io.*; class sumdigit { public static void main(String arg[]) throws IOException { int n,r,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); while (n!=0) { r=n%10; s=s+r; n=n/10; } System.out.println("The sum of the digit ="+s); } } Enter Number 2356 The sum of the digit =16 Q.No : 2. // Program to find reverse of the number import java.io.*; class reverse { public static void main(String arg[]) throws IOException { int n,r,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); 1 while (n!=0) { r=n%10; s=s*10+r; n=n/10; } System.out.println("The Reverse of the number ="+s); } } Enter Number 5678 The Reverse of the number =8765 Q.No : 3. // Program to find given number is palindrome or not import java.io.*; class poly { public static void main(String arg[]) throws IOException { int n,m,r,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; while (n!=0) { r=n%10; s=s*10+r; n=n/10; } if(s==m) System.out.println("The Given No is palindrome "+s); else System.out.println("The Given No is Not palindrome "+s); } } Enter Number 232 The Given No is palindrome 232 2 Q.No : 4. // Program to find given number is Armstrong no or not import java.io.*; class Armstrong { public static void main(String arg[]) throws IOException { int n,m,r; double s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; while (n!=0) { r=n%10; s=s+Math.pow(r,3); n=n/10; } if(s==m) System.out.println("The Given No is Armstrong number= "+s); else System.out.println("The Given No is Not Armstrong number "+s); } } Enter Number 153 The Given No is Armstrong number= 153.0 Q.No : 5. // Program Check Neon Number or not import java.io.*; class Neon { public static void main(String arg[]) throws IOException { int n,m,r,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n*n; 3 while (m!=0) { r=m%10; s=s+r; m=m/10; } if(s==n) System.out.println("The Given No Neon Number= "+s); else System.out.println("The Given No is Not Neon Number "+s); } } Q.No : 6. // Program Check Duck Number or not import java.io.*; class Duck { public static void main(String arg[]) throws IOException { int n,m,r,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; while (n!=0) { r=n%10; if(r==0) { s=1; break; } n=n/10; } if(s==1) System.out.println("The Given No Duck Number= "+m); else System.out.println("The Given No is Not Duck Number "+m); } } 4 Enter Number 5063 The Given No Duck Number= 5063 Q.No : 7. // Program to check special number or not import java.io.*; class special { public static void main(String arg[]) throws IOException { int n,m,r,i,s=0,f=1; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; while (n!=0) { r=n%10; f=1; for(i=1;i<=r;i++) f=f*i; s=s+f; n=n/10; } if(s==m) System.out.println("The Given No is Special Number "+m); else System.out.println("The Given No is Not Special Number "+m); } } Enter Number 145 The Given No is Special Number 145 5 Q.No : 8. // Program finding factorial of N import java.io.*; class factorial { public static void main(String arg[]) throws IOException { int n,i,f=1; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); for(i=1;i<=n;i++) f=f*i; System.out.println("The factorial value="+f); } } Enter Number 5 The factorial value=120 Q.No : 9 // Program check perfect number or not import java.io.*; class perfect { public static void main(String arg[]) throws IOException { int n,i,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); for(i=1;i<n;i++) { if(n%i==0) s=s+i; } if(s==n) System.out.println("Given no is perfect Number="+n); else System.out.println("Given no is Not perfect Number="+n); } } 6 Enter Number 6 Given no is perfect Number=6 Q.No : 10 // Program check composite number or not import java.io.*; class composite { public static void main(String arg[]) throws IOException { int n,i,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); for(i=2;i<n;i++) { if(n%i==0) s=s+1; } if(s>1) System.out.println("Given no is composite Number="+n); else System.out.println("Given no is Not composite Number="+n); } } Enter Number 8 Given no is composite Number=8 Q.No : 11 // Program to check Twin Prime or not import java.io.*; class twinprime { public static void main(String arg[]) throws IOException { int n,m,i,c=0,d=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); 7 System.out.println("Enter First Number"); n=Integer.parseInt(in.readLine()); System.out.println("Enter Second Number"); m=Integer.parseInt(in.readLine()); for(i=1;i<=n;i++) { if (n%i==0) c=c+1; } for(i=1;i<=m;i++) { if (m%i==0) d=d+1; } System.out.println(n+ " " +m); if ((c==d) &&(n-m==2)) System.out.println("Given Nos are Twin Prime Numbers " + "("+m+","+n+")"); else System.out.println("Given Nos are Not Twin Prime Numbers " + "("+m+","+n+")"); } } Q.No : 12 // Program to check Twested Prime or not import java.io.*; class Twested { public static void main(String arg[]) throws IOException { int n,m,i,r,c=0,d=0,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; for(i=1;i<=n;i++) { if (n%i==0) c=c+1; } 8 while (n!=0) { r=n%10; s=s*10+r; n=n/10; } for(i=1;i<=s;i++) { if (s%i==0) d=d+1; } if (c==d) System.out.println("Given No are Twested Prime Number" +m); else System.out.println("Given No are Not a Twested Prime Number" +m); } } Q.No : 13 // Program to check automorphic number import java.io.*; class automorphic { public static void main(String arg[]) throws IOException { int n,m,i,r,c=0,x,y=0,s=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n*n; System.out.println("Given no is " + n); System.out.println("Its square is " + m); x=n; while (n!=0) { n=n/10; c++; } 9 while (m != 0) { r=m%10; s=s*10+r; m=m/10; c--; if(c==0) break; } while (s != 0) { r=s%10; y=y*10+r; s=s/10; } if (x==y) System.out.println("Given No is Automorphic Number" +x); else System.out.println("Given No is not Automorphic Number" +x); } } Q.No : 14 // Program for to display pattern class pattern { public static void main (String arg[]) { int i,j,r,a=1; for(i=1;i<=5;i++) { for(j=1;j<=5;j++) { r=a%10; System.out.print( r+" "); a=a+2; } System.out.println(); a=a+2; } } } 10 13579 35791 57913 79135 91357 Q.No : 15 // Program to display the frequency of each digit import java.io.*; class frequency { public static void main(String arg[]) throws IOException { int n,r,c0=0,c1=0,c2=0,c3=0,c4=0,c5=0,c6=0,c7=0,c8=0,c9=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); while (n != 0) { r=n%10; switch(r) { case 0: c0++; break; case 1: c1++; break; case 2: c2++; break; case 3: c3++; break; case 4: c4++; break; case 5: c5++; break; case 6: c6++; 11 break; case 7: c7++; break; case 8: c8++; break; case 9: c9++; break; } n=n/10; } if (c0!=0) System.out.println("The frequency of 0 = " +c0); if (c1!=0) System.out.println("The frequency of 1 = " +c1); if (c2!=0) System.out.println("The frequency of 2 = " +c2); if (c3!=0) System.out.println("The frequency of 3 = " +c3); if (c4!=0) System.out.println("The frequency of 4 = " +c4); if (c5!=0) System.out.println("The frequency of 5 = " +c5); if (c6!=0) System.out.println("The frequency of 6 = " +c6); if (c7!=0) System.out.println("The frequency of 7 = " +c7); if (c8!=0) System.out.println("The frequency of 8 = " +c8); if (c9!=0) System.out.println("The frequency of 9 = " +c9); } } 12 Q.No : 16 // Program to check unique no or not import java.io.*; class unique { public static void main(String arg[]) throws IOException { int n,m,r,c0=0,c1=0,c2=0,c3=0,c4=0,c5=0,c6=0,c7=0,c8=0,c9=0; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter Number"); n=Integer.parseInt(in.readLine()); m=n; while (n != 0) { r=n%10; switch(r) { case 0: c0++; break; case 1: c1++; break; case 2: c2++; break; case 3: c3++; break; case 4: c4++; break; case 5: c5++; break; case 6: c6++; break; case 7: c7++; break; case 8: c8++; break; case 9: 13 c9++; break; } n=n/10; } if ((c0<2)&&(c1<2) && (c2<2) && (c3<2)&&(c4<2)&&(c5<2)&&(c6<2)&&(c7<2) &&(c8<2)&&(c9<2)) System.out.println("Given No is unique no="+m); else System.out.println("Given No is Not unique no="+m); } } Enter Number 5463 Given No is unique no=5463 14 Arrays Q.No:1 Write a program to enter a set of 10 integers. Sort the numbers in ascending order by using Selection sort technique. Display the sorted array. // Sort the Numbers in Ascending order by using Selection sort import java.io.*; public class sort { public static void main (String args[]) throws IOException { int i,j,t,min; int m[]=new int[10]; InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); System.out.println("Enter 10 Numbers"); for(i=0;i<10;i++) { m[i]=Integer.parseInt(in.readLine()); } for(i=0;i<9;i++) { min=i; for(j=i+1;j<10;j++) { if (m[j]<m[min]) min=j; } t=m[i]; m[i]=m[min]; m[min]=t; } System.out.println("The Numbers arranged in ascending order are.."); for(i=0;i<10;i++) System.out.println(m[i]); } } Q.No:2 Write a program to enter a set of 10 strings. Sort the strings ascending order by using Selection sort technique. Display the sorted array. // Sort the strings in Ascending order by using Selection sort import java.io.*; public class sort { public static void main (String args[]) throws IOException { int i,j,min; String m[]=new String[10]; String t; InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); System.out.println("Enter 10 Names"); for(i=0;i<10;i++) { m[i]=in.readLine(); } for(i=0;i<9;i++) { min=i; for(j=i+1;j<10;j++) { if (m[j].compareTo(m[min])>0) min=j; } t=m[i]; m[i]=m[min]; m[min]=t; } System.out.println("The strings arranged in ascending order are.."); for(i=0;i<10;i++) System.out.println(m[i]); } } Q.No:3 Write a program to enter a set of 10 integers. Sort the numbers in ascending order by using Selection sort technique. Display the sorted array. // Sort the Numbers in Ascending order by using Bubble sort import java.io.*; public class sort { public static void main (String args[]) throws IOException { int i,j,t; int m[]=new int[10]; InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); System.out.println("Enter 10 Numbers"); for(i=0;i<10;i++) { m[i]=Integer.parseInt(in.readLine()); } for(i=0;i<9;i++) { for(j=0;;j<(9-i);j++) { if (m[i]>m[j]) { t=m[i]; m[i]=m[j]; m[j]=t; } } } System.out.println("The Number arranged in ascending order are.."); for(i=0;i<10;i++) System.out.println(m[i]); } } Q.No:4 Write a program to enter a set of 10 strings. Sort the strings ascending order by using Selection sort technique. Display the sorted array. // Sort the Strings in Ascending order by using Bubble sort import java.io.*; public class sort { public static void main (String args[]) throws IOException { int i,j; String m[]=new String[10]; String t; InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); System.out.println("Enter 10 Names"); for(i=0;i<10;i++) { m[i]=in.readLine(); } for(i=0;i<9;i++) { for(j=0;j<(9-i);j++) { if (m[i].compareTo(m[j])>0) { t=m[i]; m[i]=m[j]; m[j]=t; } } } System.out.println("The Names arranged in ascending order are.."); for(i=0;i<10;i++) System.out.println(m[i]); } } Q.No:5 Write a program to accept 10 different numbers in a single dimensional array(SDA). Enter a number and using Binary search technique, check whether a number is present or not in the array. If the number is present then display the message Search Successful otherwise The Search unsuccessful . // To search using Binary Search Technique // To enter the number in either ascending or descending order import java.io.*; public class search { public static void main (String args[]) throws IOException { int i,lb,ub,p,k,ns; lb=0;ub=9;p=0;k=0;ns=0; int m[]=new int[10]; InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); System.out.println("Enter 10 Numbers"); for(i=0;i<10;i++) { System.out.print("Enter Numbers in ascending order in the cell " + (i+1)+":"); m[i]=Integer.parseInt(in.readLine()); } System.out.println("Enter the no. to be searched"); ns=Integer.parseInt(in.readLine()); while(lb<=ub) { p=(lb+ub)/2; if (m[p]<ns) lb=p+1; if(m[p]>ns) ub=p-1; if (m[p]==ns) { k=1; break; } } if(k==1) System.out.println("The search is successful "+ ns+ "Present in the position "+ (p+1)); else System.out.println("The search is unsuccessrul"); } } Q.No:6 Write a program to accept 10 different string in a single dimensional array(SDA). Enter a string and using Binary search technique, check whether a stringis present or not in the array. If the number is present then display the message Search Successful otherwise The Search unsuccessful . // To search using Binary Search Technique // To enter the Names in either ascending or descending order import java.io.*; public class search { public static void main (String args[]) throws IOException { InputStreamReader read = new InputStreamReader (System.in); BufferedReader in= new BufferedReader(read); int i,lb,ub,p,k; lb=0;ub=9;p=0;k=0; String m[]=new String[10]; String ns; System.out.println("Enter 10 Numbers"); for(i=0;i<10;i++) { System.out.print("Enter string in ascending order in the cell " + (i+1)+":"); m[i]=in.readLine(); } System.out.println("Enter the string to be searched"); ns=in.readLine(); while(lb<=ub) { p=(lb+ub)/2; if (m[p].compareTo(ns)<0) lb=p+1; if(m[p].compareTo(ns)>0) ub=p-1; if (m[p].compareTo(ns)==0) { k=1; break; } } if(k==1) System.out.println("The search is successful "+ ns+ "Present in the position "+ (p+1)); else System.out.println("The search is unsuccessrul"); } } Strings Q.No : 1. Write a program to accept a string/ sentence, count and display no of vowels present in the each word. Enter a String MASTERING INFORMATION TECHNOLOGY The vowels present in MASTERING=3 The vowels present in INFORMATION=5 The vowels present in TECHNOLOGY=3 // Count no of vowels import java.io.*; public class vowels { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str,n; int x,y,z,i,count; char b; n=""; count=0; System.out.println("Enter a String"); str=in.readLine(); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b!=' ') { n=n+b; } else { z=n.length(); for(i=0;i<z;i++) { b=(n.charAt(i)); if(b=='a' || b=='e'||b=='i'||b=='o'||b=='u'||b=='A'|| b=='E'||b=='I'||b=='O'||b=='U') count++; } System.out.println("The vowels present in "+n+"="+count); n=""; count=0; } } }} Q.No : 2. Write a program to generate a pattern of a string entered by the user based upon the user s choice. Sample Input : Enter a String : HONESTY IS THE BEST POLICY Enter your choice 1 Sample Output H I T B P Enter your choice 2 Sample Output Y S E T Y // Generate a pattern of a string import java.io.*; public class pattern { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str; int x,y; int ch; char b; System.out.println("Enter a String"); str=in.readLine(); System.out.println("Enter the choice"); System.out.println("1. To display Starting Character"); System.out.println("2. To display Ending Character"); ch=Integer.parseInt(in.readLine()); switch(ch) { case 1: System.out.println("Output Patter is"); str=" "+str; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b==' ') System.out.println(str.charAt(y+1)); } break; case 2: System.out.println("Output Patter is"); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b==' ') System.out.println(str.charAt(y-1)); } break; default: System.out.println("Invalid Choice"); } } } Q.No : 3. Write a program in java to enter a string/sentence and display the longest word and the length of the longest word present in the string. Sample Input : TATA FOOTBALL ACADEMY WILL PLAY AGAINST MOHAN BAGAN Sample output : The longest word : FOOTBALL The length of the word : 8 // Program for Longest Word and Length import java.io.*; public class example { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str,m,n; int x,y; char b; m=""; n=""; System.out.println("Enter a String"); str=in.readLine(); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b==' ') { if (n.length()<m.length()) n=m; m=""; } else { m=m+b; } } System.out.println("The Longest Word is " + n); System.out.println("The Length of word is "+n.length()); } } Q.No : 4. Write a program in java to accept a name (containing three word) and display the surname first followed by the first and middle names. Sample Input: MOHANDAS KARAMCHAND GANDHI Sample Output : GANDHI MOHANDAS KARAMCHAND // Program for display the string import java.io.*; public class example { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str,m,n; int x,y; int count; char b; m=""; n=""; count=0; System.out.println("Enter a String"); str=in.readLine(); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b==' ') { if (count<2) n=n+" " +m; else n=m+" "+n; m=""; count++; } else { m=m+b; } } System.out.println("The Output = " + n); } } Q.No : 5. Write a program in java to accept a sentence and display the longest word of the sentence. The program also display the number of vowels in the longest word. Sample Input: ONE OF THE BEST SCHOOL IS RAJENDRA VIDYALAYA Sample Output : Longest word : VIDYALAYA No of vowels in the longest word : 4 // Program to display longest word and no of vowels import java.io.*; public class example { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str,m,n; int x,y; int count; char b; m=""; n=""; count=0; System.out.println("Enter a String"); str=in.readLine(); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b==' ') { if (n.length()<m.length()) n=m; m=""; } else { m=m+b; } } x=n.length(); for(y=0;y<x;y++) { b=(n.charAt(y)); if(b=='a' || b=='e'||b=='i'||b=='o'||b=='u'||b=='A'|| b=='E'||b=='I'||b=='O'||b=='U') count++; } System.out.println("The Longest Word is " + n); System.out.println("The No of Vowels is " + count); } } Q.No : 6. Write a program to accept a string and check whether the given string is palindrome or not. Sample Input : MADAM Sample Output : Given string is Palindrome : MADAM // To Check given string is palindrome or not import java.io.*; public class palindrome { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str, st1=" "; int x,y; char b; System.out.println("Enter a String"); str=in.readLine(); x=str.length(); for(y=x-1;y>=0;y--) { b=(str.charAt(y)); st1=st1+b; } st1=st1.trim(); if(str.compareTo(st1)==0) System.out.println("Given string is Palindrome " + str); else System.out.println("Given string is Not palindrome " + str); } } Q.No : 7. Write a program to accept a string in upper case and find the frequency of each character present in the string. Enter the String COMPUTER APPLICATIONS Frequency of A is 2 Frequency of C is 2 Frequency of E is 1 Frequency of I is 2 Frequency of L is 1 Frequency of M is 1 Frequency of N is 1 Frequency of O is 2 Frequency of P is 3 Frequency of R is 1 Frequency of S is 1 Frequency of T is 2 Frequency of U is 1 //Frequency of each character import java.io.*; class frequency { public static void main(String arg[])throws IOException { String str,str1,str2; int x,i,j,c=0,s; char b,ch; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); str=str.toUpperCase(); x=str.length(); for(i=65;i<=90;i++) { c=0; for(j=0;j<x;j++) { b=str.charAt(j); s=(int)b; if(s==i) c++; } ch=(char)i; if(c!=0) System.out.println("Frequency of " +ch+" is "+c); } } } Q.No : 8. Write a program to accept a string in upper case and find the frequency of each character present in the string. //Frequency of each character import java.io.*; class frequency { public static void main(String arg[])throws IOException { String str,str1,str2; int x,i,j,c=0,s; char b,ch; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); str=str.toLowerCase(); x=str.length(); for(i=97;i<=122;i++) { c=0; for(j=0;j<x;j++) { b=str.charAt(j); s=(int)b; if(s==i) c++; } ch=(char)i; if(c!=0) System.out.println("Frequency of " +ch+" is "+c); } } } Q.No : 9. Write a program to accept a string and find maximum no of times occurs a character in a given string. Sample Input Enter the String James Gosling Developed Java Sample Output The Character with maximum number of times= e Number of times= 4 // To find maximum no of time occurs a character in a string import java.io.*; class maximum { public static void main(String arg[])throws IOException { String str,str1,str2; int x,i,j,s,c=0,max=0; char b=' ',ch=' '; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); x=str.length(); for(i=65;i<=122;i++) { c=0; if(i>90 && i<=96) continue; for(j=0;j<x;j++) { b=str.charAt(j); s=(int)b; if(s==i) c++; if (max<c) { max=c; ch=(char)i; } } } System.out.println("The Character with maximum number of times= "+ch); System.out.println("Number of times= "+max); } } Q.No : 10. Consider a string as: RED BOTTLE IS IN RED BAG ON RED CARPET Write a program to enter the string through console and replace the token RED with GREEN without using built in function. Output : GREEN BOTTLE IS IN GREEN BAG ON GREEN CARPET import java.io.*; public class Q820 { public static void main(String args[]) throws IOException { InputStreamReader read=new InputStreamReader(System.in); BufferedReader in= new BufferedReader(read); String str,str1="",n=""; int x,y,z,i,count=0; char b; System.out.println("Enter a String"); str=in.readLine(); str=str+" "; x=str.length(); for(y=0;y<x;y++) { b=(str.charAt(y)); if (b!=' ') { n=n+b; } else { if (n.equals("Blue")) str1=str1+" "+"Red"; else str1=str1+" "+n; n=""; } } System.out.println("The New String is="+str1); } } Q.No : 11. A String is said to be Unique , if none of the alphabets present in the string are repeated. Write a program to accept a string and check whether the string is unique or not. The program display a message accordingly. Sample input : COMPUTER Sample output : Unique String import java.io.*; public class unique { public static void main(String arg[])throws IOException { String str,str1,str2; int x,i,j,c=0,s; char b,ch; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); str=str.toUpperCase(); x=str.length(); for(i=0;i<x;i++) { c=0; for(j=0;j<x;j++) { if(str.charAt(i)==str.charAt(j)) c++; } if(c>1) break; } if(c==1) System.out.println("Unique String"); else System.out.println("Not a Unique String"); } } Enter a String Blue bottle is in Blue bag lying on Blue carpet The New String is= Red bottle is in Red bag lying on Red carpet Q.No : 12. Write a Program to display the following pattern Enter the String BLUEJ BLUEJ BLUEB BLUBL BLBLU BBLUE // Ddisplay the pattern import java.io.*; class ser2 { public static void main(String arg[])throws IOException { String str,str1,str2; int x,i,y; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); x=str.length(); y=0; for(i=x;i>=1;i--) { str1=str.substring(0,i); str2=str.substring(0,y); System.out.println(str1+str2); y++; } } } Q.No : 13. Write a Program to display the following pattern Enter the String BLUEJ J EE UUU LLLL BBBBB // Display the pattern import java.io.*; class ser1 { public static void main(String arg[])throws IOException { String str; int x,i,j; char b; InputStreamReader read= new InputStreamReader(System.in); BufferedReader in=new BufferedReader(read); System.out.println("Enter the String"); str=in.readLine(); x=str.length(); for(i=x-1;i>=0;i--) { b=str.charAt(i); for(j=i;j<x;j++) System.out.print(b+" "); System.out.println(); } } } // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,i; char ch=0; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); for(y=0;y<x;y++) { for(i=0;i<=y;i++) { ch=st.charAt(i); System.out.print(ch+ " "); } System.out.println(); } } } Enter your word to print a pattern BLUEJ B BL BLU BLUE BLUEJ // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,i,j,z=0; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); 1 BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); for(y=0;y<x;y++) { for(j=y; j<x;j++) { ch=st.charAt(j); System.out.print(ch+ " "); } for (i=0;i<z;i++) { ch=st.charAt(i); System.out.print(ch+ " "); } z++; System.out.println(); } } } Enter your word to print a pattern BLUEJ BLUEJ LUEJB UEJBL EJBLU JBLUE // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,j; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); 2 st=in.readLine(); x=st.length(); for(y=x-1;y>=0;y--) { for(j=0;j<=y;j++) { ch=st.charAt(j); System.out.print(ch+ " "); } System.out.println(); } } } Enter your word to print a pattern BLUEJ BLUEJ BLUE BLU BL B // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,j,z; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); z=x-1; for(y=0;y<x;y++) { ch=st.charAt(z); for(j=0;j<=y;j++) System.out.print(ch+ " "); System.out.println(); z--; 3 } } } Enter your word to print a pattern BLUEJ J EE UUU LLLL BBBBB // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,j; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); for(y=0;y<x;y++) { for(j=y;j<x;j++) { ch=st.charAt(j); System.out.print(ch+ " "); } System.out.println(); } } } Enter your word to print a pattern BLUEJ BLUEJ LUEJ UEJ 4 EJ J Enter your word to print a pattern ABCDE ABCDE BCDE CDE DE E / A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x=65,y,j; char ch; System.out.println(" Given pattern is"); for(y=0;y<5;y++) { for(j=0;j<=y;j++) { ch=(char)(x); System.out.print(ch+ " "); x++; } System.out.println(); } } } Given pattern is A BC DEF GHIJ KLMNO // A program to display pattern import java.io.*; public class pattern 5 { public static void main(String arg[]) throws IOException { int x,y,j; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); for(y=0;y<x;y++) { for(j=y;j>=0;j--) { ch=st.charAt(y); System.out.print(ch+ " "); } System.out.println(); } } } Enter your word to print a pattern BLUEJ B LL UUU EEEE JJJJJ // A program to display pattern import java.io.*; public class pattern { public static void main(String arg[]) throws IOException { int x,y,i,j,z=0; char ch; String st; InputStreamReader read=new InputStreamReader(System.in); BufferedReader in = new BufferedReader(read); System.out.println("Enter your word to print a pattern"); st=in.readLine(); x=st.length(); 6 for(y=x-1;y>=0;y--) { for(j=0;j<=y;j++) { ch=st.charAt(j); System.out.print(ch+ " "); } for (i=0;i<z;i++) { ch=st.charAt(i); System.out.print(ch+ " "); } z++; System.out.println(); } } } Enter your word to print a pattern BLUEJ BLUEJ BLUEB BLUBL BLBLU BBLUE 7

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