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version (1.68 KB) by Jos (10584)
swap contents of two variables


Updated 13 Sep 2006

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SWAP(A,B) puts the contents of variable A into variable B and vice versa. You can use either function syntax 'swap(A,B)' or command syntax 'swap A B'.

A = 1:4 ; B = 'Hello' ;
swap(A,B) ;
A % -> Hello
B % -> 1 2 3 4
swap A B ; % and back again ...

SWAP(A,B) is a convenient easy short-cut for other (series of) commands that have the same effect,e.g.,

temp=A ; A=B ; B=temp ; clear temp ;
[B,A] = deal(A,B) ;

The advantage over these two methods is that using SWAP one does not have to declare intermediate variables or worry about output.

Cite As

Jos (10584) (2021). SWAP (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R13
Compatible with any release
Platform Compatibility
Windows macOS Linux

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