CODEWITHSUNDEEP
matlab
lucas
lucas

Reputation: 11

how swapping of two elements in a string can be done in matlab?

I have a string of english alphabets and i want to swap first element with second and so on. I am using this code:

for a = 1:25;
b= 1;
k(a)= k(a+b);
end

I don't know whether its a right approach or not. Any help will be appreciated

Upvotes: 0

Views: 103

Answers (2)

dcmotor
dcmotor

Reputation: 58

Swapping means first element must have the data of second element and second element must have data of first.

In your code you assigned first element the data of second element but you dind'nt do it the other way around.

 i=0;
 k=[1,2,3,4,5,6,7,8,9,10];
 b=1;
 for a= 1:5
   t=k(a+i);
   k(a+i)=k(a+b+i);
   k(a+b+i)=t;
   i=i+1;
 end

Upvotes: -1

eigenchris
eigenchris

Reputation: 5821

This should work, assuming the array has an even length.

k = 'abcdefghijklmnop'
temp = k;
k(1:2:end) = temp(2:2:end);
k(2:2:end) = temp(1:2:end)

The result I get is

k =
badcfehgjilknmpo

EDIT: Luis Mendo mentioned an even better way:

k([1:2:end 2:2:end]) = k([2:2:end 1:2:end])

Upvotes: 3

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