Java for loop vs. while loop. Performance difference?

Question

Assume i have the following code, there are three for loop to do something. Would it run fast if i change the most outer for loop to while loop? thanks~~

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Answer 1

Even if the hypothesis of the while loop being faster than the for loop were true (and it's not), the loops you'd had to change/optimize wouldn't be the outer ones but the inner ones, because those are executed more times.