to identify repeated sequences within the DNA. Wr ...
题目 All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: ACGAATTCCG . When studying DNA, it is sometimes useful to identify repeated sequences within the DNA. Writ ...
2015-02-11 12:01 5 7479 推荐指数:
to identify repeated sequences within the DNA. Wr ...
题目:有效的括号 给定一个只包括 '(',')','{','}','[',']' 的字符串,判断字符串是否有效。 有效字符串需满足: 左括号必须用相同类型的右括号闭合。 左括号必须以正确的顺序闭合。 ...
复习一下KMP算法 KMP的主要思想是利用字符串自身的前缀后缀的对称性,来构建next数组,从而实现用接近O(N)的时间复杂度完成字符串的匹配 对于一个字符串str,next[j] = k 表示满 ...
Given two sequences pushed and popped with distinct values, return true if and only if this could have been the result of a sequence of push ...
Given two strings A and B, find the minimum number of times A has to be repeated such that B is a substring of it. If no such solution, return -1. ...
原题链接在这里:https://leetcode.com/problems/find-k-length-substrings-with-no-repeated-characters/ 题目: Given a string S, return the number of substrings ...
We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements ...
Given a non-empty string check if it can be constructed by taking a subs ...