Question

How to find the number of occurrences (frequency) of each character in a string with Java

Answer 1

public class MyClass {
    static final int TOTLAASCII = 256; 
    
    public static void main(String args[]) {
        String s = "javac++phpcpythonc#GO";
        char arr[] = new char[TOTLAASCII]; 
        int len = s.length(); 
     
        for (int i = 0; i < len; i++) {
            arr[s.charAt(i)]++;
        }
     
        for (int i = 1; i < TOTLAASCII; i++) {
            if (arr[i] > 0) {
               System.out.println((char)i + " - " + (int)arr[i]);
            }
        }
    }
}




/*
run:

# - 1
+ - 2
G - 1
O - 1
a - 2
c - 3
h - 2
j - 1
n - 1
o - 1
p - 3
t - 1
v - 1
y - 1

*/

 

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