Description You are working for Macrohard company in data structures department. After failin ...
来自http: www.cnblogs.com oa archive .html的启发, 看上述博客如何求第k大的数时,被其第二份代码影响,感觉很巧妙,于是研究了一下,搞懂后顿时神清气爽啊。。。 还是看这张经典的图吧,知识在图上就变得形象多了 现在假设要求sum a 的值,一般我们都是从后往前求和,如a lowbit lowbit lowbit lowbit b 答案就是sum sum sum ...
2011-12-25 16:28 1 4442 推荐指数:
Description You are working for Macrohard company in data structures department. After failin ...
Given an integer array, return the k-th smallest distance among all the pairs. The distance of a pair (A, B) is defined as the absolute difference ...
K-th Number Time Limit: 20000MS Memory Limit: 65536K Total Submissions: 44952 Accepted ...
is the K-th smallest fraction considered? Return your an ...
occurrence of 1 with 10. Given row N and index K, return ...
我们考虑,一个子串必定是某个后缀的前缀。 排序相邻的后缀他们的前缀一定最相似。 所以全部的一种子串必定是一些排序相邻的后缀的公共前缀。 从l开始的子串,则从rank[l]开始看,两侧height ...
含有n个数的序列a[1],a[2],a[3]……a[n],程序必须回答这样的询问:对于给定的i,j,k ...
Given integers n and k, find the lexicographically k-th smallest integer in the range from 1 to n. Note: 1 ≤ k ≤ n ≤ 109. Example: 这道题是之前 ...