Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] class Solution { public: vector<vector<int> > generate(int numRows) { // Start typing your C/…

题目 Given an index k, return the kth row of the Pascal's triangle. For example, given k = 3, Return [1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space? 分析 与上题LeetCode 118 Pascal's Triangle本质相同: 需要注意的是,本题参数 k = 3 代表下标为3的那行元…

题目 Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5, Return 分析 构建数字金字塔,由上图可以清楚的找到规律. 该题目可用递归实现! 比较简单~ AC代码 class Solution { public: vector<vector<int>> generate(int numRows) { if (numRows == 0) ret…

Description Given a non-negative index k where k ≤ 33, return the kth index row of the Pascal's triangle. Note that the row index starts from 0. In Pascal's triangle, each number is the sum of the two numbers directly above it. Example: Input: Output…

Description Given a non-negative integer numRows, generate the first numRows of Pascal's triangle. In Pascal's triangle, each number is the sum of the two numbers directly above it. Example: Input: Output: [ [], [,], [,,], [,,,], [,,,,] ] 题目描述,给定一个数量…

118 - Pascal's Triangle Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] Solution: class Solution { public: vector<vector<int>> generate(int n…

Given a non-negative integer numRows, generate the first numRows of Pascal's triangle. In Pascal's triangle, each number is the sum of the two numbers directly above it. Example: Input: 5 Output: [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] class…

这是悦乐书的第171次更新,第173篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第30题(顺位题号是119).给定非负索引k,其中k≤33,返回Pascal三角形的第k个索引行.行索引从0开始.在Pascal的三角形中,每个数字是它上面两个数字的总和.例如: 输入: 2 输出: [1,2,1] 输入: 3 输出: [1,3,3,1] 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试. 02 第…

这是悦乐书的第170次更新,第172篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第29题(顺位题号是118).给定非负整数numRows,生成Pascal三角形的第一个numRows.例如: 输入: 5 输出: [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试. 02 解题 对于题目的想要表达的意思…

Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle [ [], [,4], [6,,7], [4,,8,3] ] The minimum path sum from top to bottom is 11 (i.e.,…