Java Program to Swap The Two Values using XOR Operator | Method 3 | Direct Coding |

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Approach 3: Swapping the Values Using Operator

Bit-wise operators are used to perform manipulation of individual bits of a number. They can be used with any of the integral types (char, short, int, etc). They are used when performing update and query operations of Binary indexed tree.

This operator is binary operator, denoted by ‘^’. It returns bit by bit XOR of input values, i.e, if corresponding bits are different, it gives 1, else it gives 0.

Illustration:

a = 5 = 0101 (In Binary)
b = 7 = 0111 (In Binary)

Bitwise XOR Operation of 5 and 7
0101
^ 0111
________
0010 = 2 (In decimal)
This is the most optimal method as here directly computations are carried on over bits instead of bytes as seen in above two methods.

Time complexity: O(1) as it is doing constant operations

Auxiliary Space: O(1)