优势：时间复杂度O(d*(n+k))，d为位数，适合位数少的整数
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Майя Пономаренко
if (left < n) {
New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »
· 张伟 · 来源：dev资讯