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What does &= mean for integers?
By thebigjuicyd, history, 4 years ago, In English

I just participated in the Div 2 Algo Muse Comp and on question 3, you could use &=. But the &= was not used with booleans. It was used with int, like a &= n — 1; What does the &= mean and do in this int context?

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4 years ago, # |
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a &= n-1 is same as a = a & (n-1) it is called bit-wise and.

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4 years ago, # |
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Google and read about bitwise operators.

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