题目: Given an input string, reverse the string word by word. For example,      Given s = "the sky is blue",      return "blue is sky the". Clarification: What constitutes a word? A sequence of non-space characters constitutes a word. Co…

描述 Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. Example 1: Input: "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc&quo…

题目: 翻转字符串 给定一个字符串,逐个翻转字符串中的每个单词. 样例 给出s = "the sky is blue",返回"blue is sky the" 说明 单词的构成:无空格字母构成一个单词 输入字符串是否包括前导或者尾随空格?可以包括,但是反转后的字符不能包括 如何处理两个单词间的多个空格?在反转字符串中间空格减少到只含一个 解题: 这个题目方法很多的 1.整体反转,对每个单词再反转,但是中间的多个空格还有单独处理 2.把后面的单词,拿到前面去.参考程序…

题目 Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". click to show clarification. Clarification: What constitutes a word? A sequence of non-space characters cons…

Given an input string, reverse the string word by word. A word is defined as a sequence of non-space characters.The input string does not contain leading or trailing spaces and the words are always separated by a single space.For example,Given s = "t…

Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". Update (2015-02-12): For C programmers: Try to solve it in-place in O(1) space. click to show clarification. Cl…

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. Example 1: Input: "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc"…

题目:reverse words in a string Given an input string, reverse the string word by word. For example,Given s = "the sky is blue",return "blue is sky the". 解析:将字符串中的单词逆序输出 借助一个堆栈,从前向后遍历字符串,遇到空,跳过,直到非空字符,拼接word,等再次遇到空时,得到一个word,加入堆栈, 以此类推,直到…

LeetCode: Reverse Words in a String:Evaluate Reverse Polish Notation Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or another expression. Some examples: ["2&q…

Leetcode 344:Reverse String 反转字符串 公众号:爱写bug Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, you must do this by modifying the input array in-place wit…