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Cost Reduced Swap

, 8 Dec 2006
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Swapping in C++

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.

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About the Author

jeyakumarrr
India India
i am an Computer Engineering student from india

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Comments and Discussions

 
GeneralTradeoff between efficiency and maintainability Pin
Harold Bamford12-Dec-06 7:46
memberHarold Bamford12-Dec-06 7:46 
Questionwhat about asm ? Pin
bruno leclerc11-Dec-06 22:35
memberbruno leclerc11-Dec-06 22:35 
Questionwhat about asm ? Pin
bruno leclerc11-Dec-06 22:33
memberbruno leclerc11-Dec-06 22:33 
GeneralThe "classic" way Pin
Luca Piccarreta11-Dec-06 3:49
memberLuca Piccarreta11-Dec-06 3:49 
GeneralNot Guaranteed to Work Pin
ricecake11-Dec-06 3:23
memberricecake11-Dec-06 3:23 
Generalexpression is evaluated from left to right Pin
jeyakumarrr10-Dec-06 23:24
memberjeyakumarrr10-Dec-06 23:24 
Generalit will work in Turbo C& C++ compiler only Pin
jeyakumarrr10-Dec-06 23:23
memberjeyakumarrr10-Dec-06 23:23 
GeneralDoes not work! Pin
z33z10-Dec-06 6:29
memberz33z10-Dec-06 6:29 
Generalit will work for all data types.. Pin
jeyakumarrr9-Dec-06 22:48
memberjeyakumarrr9-Dec-06 22:48 
Generalcheck it out in the system and say Pin
jeyakumarrr9-Dec-06 22:42
memberjeyakumarrr9-Dec-06 22:42 
QuestionUndefined behaviour? Pin
david_dawkins9-Dec-06 14:22
memberdavid_dawkins9-Dec-06 14:22 
GeneralIt doesn't work Pin
Vindicator6669-Dec-06 3:45
memberVindicator6669-Dec-06 3:45 

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