swap(int & a, int & b){a ^= b;b ^= a;a ^= b;}
The trick lies in the bitwise xor (^) operator. The compiler doesn’t generate a temporary variable for this operation.
Home » Swapping a Temporary Variable
swap(int & a, int & b){a ^= b;b ^= a;a ^= b;}
The trick lies in the bitwise xor (^) operator. The compiler doesn’t generate a temporary variable for this operation.
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