If the test case is failing, make sure you log the input strings and your output string (to find out what you might be missing). Remember that strings are different from integers in that "001", "__1" (spacing doesnt show on markdown, so replace "_" with space), or "1" are not equivalent to one another.
not an issue: if you end up with that, your code is incorrect.
If the test case is failing, make sure you log the input strings and your output string (to find out what you might be missing). Remember that strings are different from integers in that "001", "__1" (spacing doesnt show on markdown, so replace "_" with space), or "1" are not equivalent to one another.