ICSE − Q & A

This is from the 2016 marking scheme...(Q7)
How has variable 'i' been used in the second method too? Isn't a local variable?
And couldn't we just have declared it before void SumSeries(int n, double x)???

import java.util.*;
class Q7 {
void SumSeries(int n, double x) {
double sum=0.0d;
int i;
for(i=1;i<=n;i++)
{ if (i%2==0 )
sum=sum-x/(double)i;
else
sum=sum+x/(double)i; }
System.out.println("sum="+sum); }
void SumSeries() {
int s=0, p=1;
for(int i=1;i<=20;i++) {
p=p*i;
s=s+p; }
System.out.println("sum="+s); }
public static void main(String args[]) {
Q7 obj=new Q7();
obj.SumSeries(5,2.0);
obj.SumSeries();
}}}

+ 1 more questions by gar_d02  

Write the output for the following: String s="Today is Test" ; System.out.println(s.indexOf('T')); System.out.println(s.substring(0,7) + " " +"Holiday"); According to me, the answer should be:Today is Holiday. But the marking scheme says that it is:Today i Holiday [OR] Today Holiday Pls explain which is correct, and WHY TF are two answers being accepted?
asked by Gargie D'souza (gar_d02) 6 years ago
5

If y = 10, what is the value of :
++y * (y++ + 5)

I think it should be 15 * 12 = 180 but I am getting 176 as the output.
Any reason why it does prefix before parentheses when parentheses are above prefix in precedence?

WAP in java to accept any sentence and form a new sentence whose words are arranged in the lexicographical orde (dictionary order) using bubble sort technique. For ex, if the input show below
Input sentence: it's fun to learn computer program
Output sentence: computer fun its learn programming to

any commercial apllication students??

Who all are doing biology?

Write a program to assign a full path and file name as given below.Using library functions,extract and output the file path,file name and file extension.
Where am I wrong?

import java.util.*;
class Ex
{
     public static void main(String args[])
            {
                  Scanner in = new Scanner(System.in);
System.out.println("Enter file name");
String s = "C:\Users\admin\Pictures\flower.jpg";
int m = s.lastIndexOf('.');
System.out.println(" Extension="+(s.substring(m+1));
int j = s.lastIndexOf('\');
System.out.println("Output path ="+s.substring(0,j+1);
System.out.println("File name="+(s.substring(j+1,m));
      }
}

what is the use of math.rint() please give an example also

WAP to input a word and remove the consecutive repeated characters by replacing the sequence of repeated characters by its single occurance
Sample Input:Jaaaaaavvvvvvvvaaaaaaaaa
Sample Output:Java

Would this program be accepted?
import java.util.*;
public class Q8
{
    static void main()
    {
        Scanner ob=new Scanner(System.in);
        System.out.println("Input String:");
        String s=ob.nextLine();
        s=s+"*";
        int i;int j;
        for(i=0;i<s.length()-1;i++)
        {
            char ch=s.charAt(i);
            if(ch==s.charAt(i+1))
            continue;
            else
            System.out.print(s.charAt(i));
        }
    }
}

Can someone give me the order of logical, relational, and arithmetic operators?

Is function call by reference there in the syllabus? will the icse instruct to write the programmes using only call by reference method?