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Java - Swap two numbers without using temp var
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//'main' method must be in a class 'Rextester'. //Compiler version 1.8.0_111 import java.util.*; import java.lang.*; class Rextester { public static void main(String args[]) { int x = 10; int y = 15; x = x + y; // 25 temp x y = x - y; // 25 - 15 = 10 x = x - y; // 25 - 10 = 15 System.out.println("x = " + x); System.out.print("y = " + y); } }
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Compilation time: 0.72 sec, absolute running time: 0.2 sec, cpu time: 0.19 sec, memory peak: 18 Mb, absolute service time: 0,94 sec
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x = 15 y = 10