算法优选前缀和-阿里云

【算法优选】前缀和专题——叁

前言含义：前缀和实际上就是对于长度为n的数组，我们新建立一个数组长度为n+1，第i个元素的值为前i个元素的和（包括第i个元素）。特点：前缀和数组比原数组多一个长度。前缀和的第0个元素的值为0。根据前缀和数组的特点，求前缀和时。我们只需要用第i个元素的值+第i-1个前缀个数组的值就可能得到...

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【算法优选】前缀和专题——壹

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更新时间 2024-02-24 13:26:58

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