The path sum is (3 + 5) + (3 + 1) = 12. Example 2: Input: [113, 221] Output: 4 Explanation: The tree that the list represents is: 3 \ 1 The path sum is (3 + 1) = 4. 还是二叉树的路径之和,但树的存储方式变了,使用一个三位的数字来存的,百位是该结点的深度,十位是该结点...
dep= node/100pos= (node%100)/10next= (dep+1)*10 + pos*2next2= (dep+1)*10 + pos*2 -1foriinnums:ifi/10 == nextori/10 ==next2:returnFalsereturnTruedefpathSum(self, nums):""":type nums: List[int] :rtype: int"""maxDep=0foriinnums:ifmaxDep < i /100: maxDep= i/100...
https://leetcode.com/problems/combination-sum-iv/ https://leetcode.com/problems/partition-equal-subset-sum/ https://leetcode.com/problems/palindromic-substrings/ https://leetcode.com/problems/number-of-longest-increasing-subsequence/ https://leetcode.com/problems/partition-to-k-equal-sum-subsets...
Leetcode 377 Combination Sum IV Leetcode 1235 Maximum Profit in Job Scheduling Leetcode 1335 Minimum Difficulty of a Job Schedule Leetcode 1216 Valid Palindrome III Leetcode 97 Interleaving String Leetcode 472 Concatenated Words Leetcode 403 Frog Jump Leetcode 329 Longest Increasing Path in a Matri...
Combination Sum IV Swift Medium O(2^n) O(n) Triangle Swift Medium O(2^n) O(m) Wiggle Subsequence Swift Medium O(n) O(1) Wildcard Matching Swift Hard O(mn) O(mn) Regular Expression Matching Swift Hard O(mn) O(mn) Minimum Window Subsequence Swift Hard O(mn) O(mn) Guess Number...
666 Path Sum IV $ 48.90% Medium 665 Non-decreasing Array 21.20% Easy 664 Strange Printer 31.10% Hard 663 Equal Tree Partition $ 36.70% Medium 662 Maximum Width of Binary Tree 37.00% Medium 661 Image Smoother 46.60% Easy 660 Remove 9 $ 46.10% Hard 659 Split Array into Consecutive Subsequenc...
0666 Path Sum IV 54.7% Medium 0667 Beautiful Arrangement II 54.2% Medium 0668 Kth Smallest Number in Multiplication Table Go 45.6% Hard 0669 Trim a Binary Search Tree 63.0% Easy 0670 Maximum Swap 43.6% Medium 0671 Second Minimum Node In a Binary Tree 42.7% Easy 0672 Bulb Switcher ...
Explanation: Because the path 1→3→1→1→1 minimizes the sum. 找出矩阵的左上角到右下角的最小路径和,每次只能向右和向下移动。 问题分析: 子问题:第 i 行第 j 列的元素到右下角的路径和。 边界条件: 对于最后一行的每个元素到右下角路径和等于向右走和相加,最后一列的每个元素到右下角路径和等于向...
一. 树 1）求二叉树的高度（Maximum Depth of Binary Tree）// LeetCode, Maximum Depth of Binary ...
return true, as there exist a root-to-leaf path 5->4->11->2 which sum is 22. 【解答】没什么可说的,见代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public class Solution { public boolean hasPathSum(TreeNode root, int sum) { if (null==root) return false; List<Integer>...