int rounded = number >= MAXIMUM_CAPACITY ? MAXIMUM_CAPACITY
: (rounded = Integer.highestOneBit(number)) != 0 ?
(Integer.bitCount(number) > 1) ? rounded << 1 : rounded
: 1;
分析rounded求解过程:
Created with Raphaël 2.1.0开始number >= 2^302^30返回rounded = Integer.highestOneBit(number)rounded !=0 Integer.bitCount(number) > 1rounded << 1 rounded1yesnoyesnoyesno
流程图
Created with Raphaël 2.1.0开始number >= 2^302^30返回rounded,求最接近的r=2^nrounded !=0 number >rnumber>r 则两倍之本来就是2^n的值得round1yesnoyesnoyesno
流程图分析
本文详细解析了在特定条件下计算变量rounded的过程。首先判断number是否大于等于2^30,若是,则直接设置rounded为最大容量;否则通过Integer.highestOneBit获取最接近number的2的幂次,并进一步判断是否需要翻倍或保持不变。
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