Reverse for

When one writes a for loop for ascending order it will probably be like this:

for (int i = 0; i < count; i++)

But what if you want to do it in reversed order? The first option would be:

for (int i = count - 1; i >= 0; i--)

I personally prefer the form below, as it’s more concise, uses comparison without equals and doesn’t need -1 after count (being more similar to ascending loop), while it does the same thing (descending traversal). And it’s not difficult to memorize either:

for (int i = count; i-- > 0; )

What I don’t like about this one is that the number of characters its code uses is actually lower than that of the ascending loop, since there is no need for a third expression.

Do you have a better solution? (Define better first.) 🙂

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About Sorin Dolha

My passion is software development, but I also like physics.
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