Counting letters in a string using two for-loops

Question

I have to read the string \"hello world\" and output each letter\'s frequency using only for loops. The instructor hinted that I\'d need to use two loops and ga

Answer 1

I would use a simple array. Simply convert each letter to an index and increment the array at that index.

int letters[26];
int index = ch - 'a';
letters[index]++;