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搜索关键字:distinct subsequence    ( 4379个结果
Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cl ...
分类:其他好文   时间:2020-01-21 16:15:13    阅读次数:70
Codeforces Round #611 (Div. 3) D
There are nn Christmas trees on an infinite number line. The ii -th tree grows at the position xixi . All xixi are guaranteed to be distinct. Each int ...
分类:其他好文   时间:2020-01-21 13:20:26    阅读次数:96
PAT Advanced 1020 Tree Traversals (25分)
1020 Tree Traversals (25分) Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequen ...
分类:其他好文   时间:2020-01-20 20:53:02    阅读次数:76
Spark union
比如两个rdd 两个分区合并去他们的并集 intersection 去数据的交集 subtract去差集 mappartition与map像是遍历的单位是每个pation分区的数据进来的是iterrter是迭代器 distinct去重(map+reducebykey+map) cogroup 作用在 ...
分类:其他好文   时间:2020-01-19 11:04:30    阅读次数:97
@atcoder - AGC024F@ Simple Subsequence Problem
给定由若干长度 <= N 的 01 字符串组成的集合 S。请找到长度最长的串 t(如果有多个选字典序最小的),使得存在 >= K 个 S 中的字符串,使得 t 是这些字符串的子序列。 ...
分类:其他好文   时间:2020-01-19 09:43:45    阅读次数:67
A. Two distinct points
A. Two distinct points You are given two segments l1;r1 and l2;r2 on the xx-axis. It is guaranteed that l1<r1l1<r1 and l2<r2l2<r2. Segments may inters ...
分类:其他好文   时间:2020-01-18 13:03:13    阅读次数:98
LeetCode 673. Number of Longest Increasing Subsequence 最长递增子序列的个数 (C++/Java)
题目: Given an unsorted array of integers, find the number of longest increasing subsequence. Example 1: Input: [1,3,5,4,7] Output: 2 Explanation: The t ...
分类:编程语言   时间:2020-01-17 19:04:48    阅读次数:77
LeetCode 1055. Shortest Way to Form String
原题链接在这里:https://leetcode.com/problems/shortest-way-to-form-string/ 题目: From any string, we can form a subsequence of that string by deleting some numb ...
分类:其他好文   时间:2020-01-17 10:01:32    阅读次数:91
2019 ICPC 南昌网络赛 - Subsequence (子串判断,预处理,超时)
"?? ?? ??" 题意:一个字符串s,t个字符串p, 判断p是不是s的子序列 预处理 出对于字符串s, 每个位置i之后第一个字母x的位置 ,匹配子序列的时候就相当于在母串上往后跳,如果跳到母串末尾,子序列还没有结束,匹配失败。 然而!超时了QAQ,只能过八组样例,网上也只能找到过九组的,,,希望 ...
分类:其他好文   时间:2020-01-16 22:24:31    阅读次数:106
rdd简单操作
1.原始数据 Key value Transformations(example: ((1, 2), (3, 4), (3, 6))) 2. flatMap测试示例 执行结果: 3.distinct、reducebykey、groupbykey 4.combineByKey(create Combi ...
分类:其他好文   时间:2020-01-16 19:01:28    阅读次数:97
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