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Answer to Question #14900 in Java | JSP | JSF for Kaze

Question #14900
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'.
Expert's answer
public class Main {

public static void main(String[] args)
//Sample string

public static char maxFrequency(String s){
int[] counters = new int[28];

//Get the ASCII code of A
int ia = (int)'A';
for (char c : s.toCharArray())
int ic = (int)c;
counters[ic - ia]++;

int max=counters[0];

for (int i = 0; i < 28; i++){

char letter=' ';
for (int i = 0; i < 28; i++){
if (counters[i] > 0 && counters[i]==max)
letter=(char)(ia + i);
return letter;


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