原创 leetcode_120. Triangle
題目： Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the
2018-09-04 06:46:27
原创 leetcode_72. Edit Distance
題目： Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operat
2018-09-04 06:46:27
原创 leetcode_153. Find Minimum in Rotated Sorted Array
題目： Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6
2018-09-04 06:46:27
原创 leetcode_96. Unique Binary Search Trees
題目： Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example, Given n =
2018-09-04 06:46:26
原创 leetcode_sicily
做了幾道模擬題。 第一道，遞歸。 簡單，不必多說。直接貼代碼： int F(int k, int n) { int m = 0; if(k == 0){ return n; } else{
2018-09-04 06:46:26
原创 leetcode_110. Balanced Binary Tree
題目： Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defi
2018-09-04 06:46:26
原创 leetcode_112. Path Sum
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along
2018-09-04 06:46:25
原创 leetcode_63. Unique Paths II
題目： Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would t
2018-09-04 06:46:24