Case 1 : Variable is a number
If X = 4, Y = 2
We need to swap the values of X and Y
Traditional approach involves a temporary variable
int x=4; y=2;
int temp;
temp = y;
y = x;
x = temp;
Optimal approach
X = X + Y; (X = 4+2 =6)
Y = X - Y; (Y = 6-2 =4)
X = X - Y; (X = 4-2 =2)
Final result : X= 2, Y=4
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Showing posts with label swap two variable without using third variable. Show all posts
Showing posts with label swap two variable without using third variable. Show all posts
Tuesday, May 08, 2012
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