Learn how to generate and print the pascal triangle in the C programming language. In mathematics, Pascal's triangle is a triangular arrangement of numbers that gives the coefficients in the expansion of any binomial expression, such as(x + y)n. It is named for the 17th-century French mathe...
杨辉三角还是Pascal Triangle 杨辉三角在英文版的LeetCode中被称为“Pascal Triangle”,这不免让人疑惑,这都是是谁的三角呢。 要不这样,谁生的早,就算谁的。 杨辉,生于1238年: Pascal(Blaise Pascal?),生于1623: OK,杨辉胜出 -- 那就叫杨辉三角。 1 读题 图源:LeetCode 这里,每一行,两边的数字都是1;第...
classSolution{public:vector<int>getRow(introwIndex){ vector<int> ans;for(inti =0; i < rowIndex +1; i++) { ans.push_back(1);for(intj = i -1; j >0; j--) ans[j] += ans[j -1]; }returnans; } };
https://leetcode.com/problems/pascals-triangle/ 题意分析: 给定一个整数,输出N层的Triangle 。 题目分析: 直接根据Triangle的定理,ans[i][j] = ans[i - 1][j] + ans[i - 1][j + 1]。 代码(python): View Code
Leetcode 118.杨辉三角(Pascal's Triangle) Leetcode 118.杨辉三角 1 题目描述(Leetcode题目链接) 给定一个非负整数 numRows,生成杨辉三角的前 numRows 行。在杨辉三角中,每个数是它左上方和右上方的数的和。 2 题解 直接构造。......
【Leetcode】Pascal's Triangle II 题目链接:https://leetcode.com/problems/pascals-triangle-ii/ 题目: th For example, given k = 3, Return[1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space? 思路: 要求空间复杂度为O(k),其实只需要记录前一行的结果就可以了...
LeetCode Top Interview Questions 118. Pascal’s Triangle (Java版; Easy) 题目描述 Given a non-negative integer numRows, generate the first numRows of Pascal's triangle. 1. In Pascal's triangle, each number is the sum of the two numbers directly above it. ...
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? 和上一题基本思路一样 java代码:...[LeetCode]--119. Pascal's Triangle II Given an index k, re...
Given an integer numRows, return the first numRows ofPascal's triangle. InPascal's triangle, each number is the sum of the two numbers directly above it as shown: 我的代码 importcopyclassSolution:defgenerate(self,numRows:int)->List[List[int]]:res_list=[[1]]if(numRows==1):retur...
118. 杨辉三角 - 给定一个非负整数 numRows,生成「杨辉三角」的前 numRows 行。 在「杨辉三角」中,每个数是它左上方和右上方的数的和。 [https://pic.leetcode-cn.com/1626927345-DZmfxB-PascalTriangleAnimated2.gif] 示例 1: 输入: numRows = 5 输出: [[1],[1,1