Description 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? Code
编辑代码 2000ms 262144K Generalized Pascal's Triangle Pascal's triangle is a triangular array in which each number can be calculated by the sum of the two numbers directly above that number as shown i
中文详解请访问我的博客:http://xiaoshig.sinaapp.com/?p=128 You are given n rods of length 1, 2…, n. You have to pick any 3 of them & build a triangle. How many distinct triangles can you make? Note that, two
Description 正在上传…取消Figure 1 shows a number triangle. Write a program that calculates the highest sum of numbers passed on a route that starts at the top and ends somewhere on the base. Each s
题目: 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 [[2],[3,4],[6,5,7],[4,1
119. Pascal’s Triangle II Given an integer rowIndex, return the rowIndexth (0-indexed) row of the Pascal’s triangle. In Pascal’s triangle, each number is the sum of the two numbers directly above it
题目 Given an array A of positive lengths, return the largest perimeter of a triangle with non-zero area, formed from 3 of these lengths. If it is impossible to form any triangle of non-zero area, ret
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]. 思路: 要求是返回帕斯卡某一行的数据设置两个list变量,pre和next,pre用来存储当前的最后的最后一行,next存储下一行,next赋值给pre(在这之前pre清空,
题目: 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]] 思路 题意是要用数组表示帕斯卡三角形输入一个数值,显示相应行数的【帕斯卡三角形根据下一行和上一行