javaprogram/Frequency.java at master · seeditsolution/javaprogram · GitHub

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public class Frequency {

public static void main(String[] args) {

//Initialize array

int [] arr = new int [] {1, 2, 8, 3, 2, 2, 2, 5, 1};

//Array fr will store frequencies of element

int [] fr = new int [arr.length];

int visited = -1;

for(int i = 0; i < arr.length; i++){

int count = 1;

for(int j = i+1; j < arr.length; j++){

if(arr[i] == arr[j]){

count++;

//To avoid counting same element again

fr[j] = visited;

}

if(fr[i] != visited)

fr[i] = count;

}

//Displays the frequency of each element present in array

System.out.println("---------------------------------------");

System.out.println(" Element | Frequency");

System.out.println("---------------------------------------");

for(int i = 0; i < fr.length; i++){

if(fr[i] != visited)

System.out.println(" " + arr[i] + " | " + fr[i]);

}

System.out.println("----------------------------------------");

}}