How to reuse a variable without initializing a new one in for loop in java?

Question

I was writing a function in java which counts the number of characters after white spaces in a string. This problem might sound trivial to some of you.

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Answer 1

You don't need to declare a new variable:

for (; position<a.length; position++) count++;

You can leave any field of the for loop blank.

Or better yet, why not:

count = a.length - position;