Compare two integers without using any Comparison operator

Given two integers A & B. Task is to check if A and B are same or not without using comparison operators.

Examples:

Input : A = 5 , B = 6
Output : 0

Input : A = 5 , B = 5 
Output : 1

Note : 1 = "YES" and 0 = "NO"

idea is pretty simple we do Xor of both element ( A , B ) . if Xor is zero then two number are equal else not .
Below is the implementation of above idea :

C++

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// C++ program to compare two integers witout
// any comparison operator.
#include<bits/stdc++.h>
using namespace std;
  
// function return true if A ^ B > 0  else false 
bool EqualNumber(int A, int B)
{
   return ( A ^ B ) ;
}
  
// Driver program 
int main()
{
  int A = 5 , B = 6; 
  cout << !EqualNumber(A, B) << endl; 
  return 0;

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Java

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// Java program to compare two integers witout
// any comparison operator.
import java.util.*;
  
class solution
{
  
// function return true if A ^ B > 0 else false 
static boolean EqualNumber(int A, int B)
{
      
  if ((A^B) != 0)
   return true;
  else
   return false;
}
  
// Driver program 
public static void main(String args[])
{
int A = 5 , B = 6
if(EqualNumber(A, B) == false
 System.out.println(1);
else
 System.out.println(0);
  
}
// This code is contributed by 
// Surendra_Gangwar

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Python3

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# Python3 program to compare two integers 
# without any comparison operator.
  
# Function return true if
# A ^ B > 0 else false 
def EqualNumber(A, B):
  
    return ( A ^ B ) 
  
# Driver Code 
A = 5; B = 6
print(int(not(EqualNumber(A, B))))
  
# This code is contributed by Smitha Dinesh Semwal.

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C#

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// C# program to compare two integers 
// without any comparison operator.
using System;
  
class GFG
{
// function return true if
// A ^ B > 0 else false 
static bool EqualNumber(int A, int B)
{
    if(( A ^ B ) > 0)
        return true;
    else
        return false;
}
  
// Driver Code 
public static void Main()
{
    int A = 5 , B = 6; 
    if(!EqualNumber(A, B) == false)
        Console.WriteLine("0"); 
    else
        Console.WriteLine("1"); 
}
  
// This code is contributed 
// by Akanksha Rai

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PHP

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<?php 
// PHP program to compare two integers 
// without any comparison operator.
  
// function return true if
// A ^ B > 0 else false 
function EqualNumber($A, $B)
{
return ( $A ^ $B ) ;
}
  
// Driver Code 
$A = 5 ;
$B = 6; 
echo ((int)!(EqualNumber($A, $B))) . "\n"
  
// This code is contributed 
// by ChitraNayal
?>

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Output:

0

Reference :http://stackoverflow.com/questions/476800/comparing-two-integers-without-any-comparison


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