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belinwu/swap_arithmetic

Last active August 29, 2015 14:21
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Swap Two Variables Without Using a Temp Variable (With Math!)
Raw
swap_arithmetic
var a = 10, b = 20;
a = a + b;
b = a - b;
a = a - b;
console.log("a = " + a + ", b = " + b); // a = 20, b = 10
Raw
swap_xor_trick
var a = 10, b = 20;
a = a ^ b;
b = a ^ b;
a = a ^ b;
console.log("a = " + a + ", b = " + b); // a = 20, b = 10
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