Question

Write the body of method called maxFrequency:

public static char maxFrequency(String s){

which takes a string (length >=1) as parameter (containing characters from a to z; only small caps), calculates frequencies of characters in the string and returns the character with maximum frequency. For example, if the parameter string is "abcabcabca", the method returns 'a'.

Answer 1

public static char maxFrequency(String s) {     int length = s.length();              int[] array = new int[26];              int max = Integer.MIN_VALUE;             int index = 0;              for (int i = 0; i < length; i++) {                    array[(int) (s.charAt(i) - 97)]++;              }              for (int i = 0; i < array.length; i++) {                     if (max < array[i]) {                              max = array[i];                             index = i;                        }              }         char c = (char) (index + 97);                return c;      }