Cost Reduced Swap

Introduction

void main() 
{ 
    int i=10,j=20; 
    j=i+j-(i=j); 
} 

Here the two variables are swapped in a single statement . The cost is reduced than the known swapping methods.

• Temporary variables are not used.
• addition and subtraction only.
• can be used for any data types and this is efficient than the normal methods.
• time is saved.
• space is saved.
• complexity reduced.