How to swap values of two variables?
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For instance, if i ask the user to input the values of a and b, in this case they choose a=10 and b=5 how would I be able to switch them so that it'll be a=5 and b=10.
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Jan
2021년 10월 19일
편집: Jan
2021년 10월 19일
@Subhashini Neelamegam: Yes, but this is more efficient:
function [b, a] = swap(a, b)
end
채택된 답변
David Goodmanson
2017년 10월 23일
Hi Daniel,
Take a look at the 'deal' command, in this case [b a] = deal(a,b)
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추가 답변 (3개)
Jan
2017년 10월 23일
Cheaper than deal:
function [b, a] = swap(a, b)
% This function has no body!
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Rik
2023년 8월 29일
You generally need to warm up function calls if you want to test timings online. This should be reasonably stable. As you can see, they differ by a lot, but in the other direction than your post shows. Using a function instead of a script might also affect the timings (as you can see, the same code runs over 10x faster inside a function).
timeit(@test_deal);timeit(@test_swap);% warm-up round
timeit(@test_deal),timeit(@test_swap)
function test_deal
c1 = zeros(100);
c2 = ones(100);
for i = 1:100000
[c1,c2] = deal(c2,c1);
end
end
function test_swap
c1 = zeros(100);
c2 = ones(100);
for i = 1:100000
[c1,c2] = swap(c2,c1);
end
end
function [a,b] = swap(a,b)
end
AAMIR SHEIKH
2020년 8월 11일
Going Traditionally !!!
a = input("enter a :::");
b = input("enter b :::");
temp = a;
a = b;
b = temp;
[a b]
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