CODEWITHSUNDEEP
javafor-loop
user1589375
user1589375

Reputation: 513

Using FOR loop and summing values between rounds in Java

this is my task:

"Write program LoopForNumberSum.java. Display only every second number, starting from 2, to the screen and sum in parenthesis between the last round and current round so far. The looping range is defined in separate variables. Use FOR-loop to solve the problem."

This is the code I have so far:

public class LoopForNumberSum {
    public static void main(String args[]) {

        int min = 2;
        int max = 10;

        for(int i = min; i <= max; i+=2) {
            int j = i+i;
            System.out.println(i + "(" + j + "), ");
        }
    }
}

^This code prints:

2(4),

4(8),

6(12),

8(16),

10(20),

But I need the number in the parenthesis to start from 2 and the rest would need to be 6, 10, 14 and 18. Like this: "2(2), 4(6)..."

Upvotes: 0

Views: 169

Answers (1)

Jean Logeart
Jean Logeart

Reputation: 53839

Try:

int sum = 0;
for(int i = 2 ; i <= 10 ; i += 2) {
    sum += i;
    System.out.println(i + "(" + sum + "), ");
}

Upvotes: 1

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