First letter that appears once
easy
Read a word. Print the 0-based position of the first letter that appears only once in it, or -1 if there is none.
Example 1: input
leetcode
Output
0
Example 2: input
loveleetcode
Output
2
Plus 2 hidden tests when you check your answer.
Your solution
Read from standard input and print the answer. Run it on the examples as often as you like, then check it against every test.
Stuck?
Open hints one at a time. The write-up explains a full solution.
Discussion
Ask a question or share a tip. Please don’t post full solutions. Posts appear once a moderator approves them.
No posts yet.