Wipro interview question - how to move the said value to one end of an array

package com.interviewquestions.wipro;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

/**

 * 

 * @author nao jinguji

 *

 */

public class Wipro {

public static void main(String[] args) {

// List<Integer> input = List.of(2,1,2,2,2,3,4,2);

// List<Integer> input = Arrays.asList(arr);

// int toMove = 2;

/*

List<Integer> output = new ArrayList(input.size());

for(int i :input) {

if(i!=toMove) {

output.add(i);

}

}

int len = input.size() -output.size();

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

output.add(toMove);

}

System.out.println(output);

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

int[] input = {2,1,2,2,2,3,4,2};

int toMove = 2;

int ptr = 0;

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

int value = input[i];

if(value!=toMove) {

input[ptr] = value;

input[i] = toMove;

ptr++;

}

}

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

System.out.print(input[i]);

}

}

}