Description You are working for Macrohard company in data structures department. After failin ...
來自http: www.cnblogs.com oa archive .html的啟發, 看上述博客如何求第k大的數時,被其第二份代碼影響,感覺很巧妙,於是研究了一下,搞懂后頓時神清氣爽啊。。。 還是看這張經典的圖吧,知識在圖上就變得形象多了 現在假設要求sum a 的值,一般我們都是從后往前求和,如a lowbit lowbit lowbit lowbit b 答案就是sum sum sum ...
2011-12-25 16:28 1 4442 推薦指數:
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 ...
我們考慮,一個子串必定是某個后綴的前綴。 排序相鄰的后綴他們的前綴一定最相似。 所以全部的一種子串必定是一些排序相鄰的后綴的公共前綴。 從l開始的子串,則從rank[l]開始看,兩側height ...
含有n個數的序列a[1],a[2],a[3]……a[n],程序必須回答這樣的詢問:對於給定的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: 這道題是之前 ...