Testcase failing though output is same

#1

Scanner scn = new Scanner(System.in);

    int testCases = scn.nextInt();

    StringBuilder sb = new StringBuilder();

    while(testCases-- > 0){
        String str1 = scn.next();
        String str2 = scn.next();
        for(int i = 0; i < str1.length(); i++){
            if(str1.charAt(i) == str2.charAt(i)){
                sb.append('0');
            }
            else{
                sb.append('1');
            }
        }
    }
    System.out.println(sb);
    return;

this is my previous sol, why this was failing for the the 0th test case? i tried writting different code and submitted it and then downloaded the test case and it worled fine vscode. what’s wrong??

#2

Hey @shruti_codess28,
Your logic for comparing the 2 strings is correct.

#3

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