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Why does the highestSquareIdx decrement by 1 at the end of the while loop?

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#1

why does the highestSquareIdx decrement by 1 at the end of the while loop?

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#2

@Shamim_Imtiaz

The inner conditions comparing the left sides with the right sides and their increments and decrements are related to the square comparison. highestSquareIdx decrement by 1 in each iteration to traverse the whole loop. If we don’t decrement it, then we will be stuck where we started which will result in 0.