Get alphabetical of each letter of word

  1. User ASCII to get the index of every word
1
2
3
4
5
6
7
8
9
10
class Solution {
    public int[] getOrder(String word) {
        // only lowercase letters
        int[] letter_array = new int[26];
        for(int i=0;i<word.length();i++) {
            letter_array[word.charAt(i) - 'a']++;
        }
        return letter_array;
    }
}
1
2
3
4
5
6
7
8
9
10
class Solution {
    // include uppercase letters
    public int[] getOrder(String word) {
        int[] letter_array = new int[60];
        for(int i=0;i<word.length();i++) {
            letter_array[word.charAt(i) - 'A']++;
        }
        return letter_array;
    }
}