原题链接在这里:https://leetcode.com/problems/shifting-letters/ 题目: We have a string S of lowercase letters, and an integer array shifts. Call the shift of a letter, the next letter in the alphabet, (wrapping around so that 'z' becomes 'a'). For example, shi…

[LeetCode]848. Shifting Letters 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/shifting-letters/description/ 题目描述: We have a string S of lowercase letters, and an integer arr…

848. Shifting Letters 题目链接:https://leetcode.com/problems/shifting-letters/description/ 思路:O(N^2)复杂度过不了:先处理shifts, 从尾到头执行shifts[i] = sum(shifts[i+1]+...+shifts[n-1]). 注意点:会爆int,及时取余或用longlong. 1 string shiftingLetters(string S, vector<int>& shift…

题目如下: 解题思路:本题首先要很快速的计算出任意一个字符shift后会变成哪个字符,其实也很简单,让shift = shift % 26,接下来再做计算.第二部是求出每个字符要shift的次数.可以得出S[0]的shift次数等于sum(shifts),S[1]的次数等于sum(shifts)-shifts[0],S[2]的次数等于sum(shifts)-shifts[0]-shifts[1]...依次类推.这个规律可以保证整个算法的复杂度是O(n). 代码如下: class Solution…

问题描述: 问题规约为:对每一个数组S,移动(shifts[0] + shitfs[1]+...+shitfs[i] )mod 26位 def shiftingLetters(self, S: str, shifts: List[int]) -> str: #a 97 ord: char->int chr: int->char sm = sum(shifts) ans = '' for i in range(len(S)): ans += chr( (ord(S[i]) - 97 + s…

We have a string S of lowercase letters, and an integer array shifts. Call the shift of a letter, the next letter in the alphabet, (wrapping around so that 'z' becomes 'a'). For example, shift('a') = 'b', shift('t') = 'u', and shift('z') = 'a'. Now f…

We have a string S of lowercase letters, and an integer array shifts. Call the shift of a letter, the next letter in the alphabet, (wrapping around so that 'z' becomes 'a'). For example, shift('a') = 'b', shift('t') = 'u', and shift('z') = 'a'. Now f…

Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical order among all possible results. Example: Given "bcabc&q…

原题链接在这里:https://leetcode.com/problems/remove-duplicate-letters/ 题目: Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexic…

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