One test case not passing

#1
#2

@dbhavanishankar89 hey bhavani this question is very simple in this question you have to take input as string and you have to apply a loop for(int i=0;s1[i]!=’\0’;i++) indices of both the string is same you have to append to new string if is it not the you have to append 1 to new string and don’t forget to take new string.

#3

i asked you why my code is failing?
please explain that by checking my code.

#4

@dbhavanishankar89 hey bhavani your code is not working for multiple test case you can check