Bonus point if you are able to do this using onlyO(n) extra space, wherenis the total number of rows in the triangle. 代码:oj测试通过 Runtime: 82 ms 1classSolution:2#@param triangle, a list of lists of integers3#@return an integer4defminimumTotal(self, triangle):5#special case6ifl...
append(triangle[0]) for i in range(1, m): row = triangle[i] n = len(row) sub_dp = [0] * n sub_dp[0] = dp[i - 1][0] + row[0] for j in range(1, n - 1): sub_dp[j] = min(dp[i - 1][j - 1], dp[i - 1][j]) + row[j] sub_dp[-1] = dp[i - 1...
参考:https://shenjie1993.gitbooks.io/leetcode-python/120%20Triangle.html 将一个二维数组排列成金字塔的形状,找到一条从塔顶到塔底的路径,使路径上的所有点的和最小,从上一层到下一层只能挑相邻的两个点中的一个。 注意点: 最好将空间复杂度控制在O(n),n是金字塔的高度 解题思路 二维DP 金字塔为: ...
具体代码: classSolution:# @param triangle, a list of lists of integers# @return an integerdefminimumTotal(self, triangle):iflen(triangle) <1:returneliflen(triangle) ==1:returntriangle[0][0]# len>1paths = triangle[0]# paths 记录当前的所有路径值length =len(triangle)foriinrange(1, length...
来自专栏 · LeetCode 每日一题 题意 给定一个数组 triangle ,求从顶部到底部的路径中数字和的最小值。 如果当前在第 i 列,那么可以选择到达下一行的第 i 列或第 i + 1 列。 进阶:使用空间复杂度为 O(n) 的算法求解。 数据限制 1 <= triangle.length <= 200 triangle[0].length == 1 triangle[i...
Python Code: # Display a message prompting the user to input lengths of the sides of a triangleprint("Input lengths of the triangle sides: ")# Request input from the user for the length of side 'x' and convert it to an integerx=int(input("x: "))# Request input from the user for...
更新于 2/16/2021, 7:21:14 AM python3 DP自下而上的方法,只用一维数组记录,所以是O(n)的额外空间 class Solution: def minimumTotal(self, triangle): # write your code here if not triangle or not triangle[0]: return 0 n, m = len(triangle), len(triangle[-1]) if n == 0 or m ==...
Write a Python program to check if a point (x,y) is in a triangle or not. A triangle is formed by three points. Input: x1,y1,x2,y2,x3,y3,xp,yp separated by a single space.Sample Solution: Python Code:# Prompt user to input coordinates of the triangle vertices (x1, y1), (x...
[Leetcode][python]Pascal's Triangle/Pascal's Triangle II/杨辉三角/杨辉三角 II,Pascal’sTriangle题目大意输出帕斯卡三角前N行11211331解题思路注意帕斯卡三角中,除了首尾,其他值为上一层的两个邻值的和代码classSolution(object):defgenerate(self,numRows):"&
[Python] 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classSolution(object):defminimumTotal(self,triangle):""":type triangle:List[List[int]]:rtype:int""" n=len(triangle)dp=triangle[n-1]foriinrange(n-2,-1,-1):forjinrange(i+1):dp[j]=min(dp[j],dp[j+1])+triangle[i][j...