118. 杨辉三角 Pascal's Triangle 【LeetCode 力扣官方题解】 65 -- 35:04 App LeetCode 119. Pascal's Triangle II 658 -- 10:12:00 App Delphi/Pascal Programming 84 -- 12:33 App Pascal's Triangle - Numberphile 1029 10 4:50 App 【Ted-ED】帕斯卡三角形中的数学秘密 The Mathematical Sec...
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; } };
3、在Python中难点应该就是每行的第一个元素和最后一个元素,最后一个元素通过判断j==i就可以区分了; 1classSolution:2#@return a list of lists of integers3defgenerate(self, numRows):4ret =[]5foriinrange(numRows):6ret.append([1])7forjinrange(1,i+1):8ifj==i:9ret[i].append(1)10else...
Given a non-negative integernumRows, generate the firstnumRowsof Pascal's triangle. 给定一个非负整数numRows,生成杨辉三角的前numRows行。 img In Pascal's triangle, each number is the sum of the two numbers directly above it. 在杨辉三角中,每个数是它左上方和右上方的数的和。 Example: 代码语...
leetcode 118. Pascal's Triangle 杨辉三角形 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] ] 这个就是中国最伟大的杨辉三角形的问题。
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...
In Pascal’s triangle, each number is the sum of the two numbers directly above it. Example: Input: 3 Output: [1,3,3,1] 1. 2. Follow up: Could you optimize your algorithm to use only O(k) extra space? 题意:要求返回指定行的杨辉三角;并且其空间复杂度为O(k); ...
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在Pascal三角形中,每个数字是它正上方的两个数字的总和 Example Input:5Output:[[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]] C++输入格式 classSolution{public:vector<vector<int>>generate(intnumRows){}}; 范例一 classSolution{public:vector<vector<int>>generate(intnumRows){vector<vector...
GivennumRows, generate the firstnumRowsof Pascal's triangle. For example, givennumRows= 5, Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] 帕斯卡三角,很简单的问题,见代码: 1classSolution {2public:3vector<vector<int>> generate(intnumRows) {4vector<vector<int>>...