原创 Leetcode_num12_Search Insert Position
題目： Given a sorted array and a target value, return the index if the target is found. If not, return the index where
2020-06-29 09:43:45
原创 leetcode_num118_Pascal's Triangle
Given numRows, generate the first numRows of Pascal's triangle. class Solution { public: vector<vector<int> > gen
2020-06-29 09:43:45
原创 leetcode_num190_Reverse Bits
Reverse bits of a given 32 bits unsigned integer. 歸併法 class Solution { public: uint32_t reverseBits(uint32_t n) {
2020-06-29 09:43:45
原创 atoi函數編寫
#include<iostream> #include<string> using namespace std; int ai(const char *p){ bool negflag = false; int rs = 0; if
2020-06-29 09:43:45
原创 leetcode_num168&171_excel title&number
Given a positive integer, return its corresponding column title as appear in an Excel sheet. class Solution { public:
2020-06-29 09:43:45
原创 排序算法總結（二）歸併法
遞歸法 #include<iostream> using namespace std; void Merge(int r[],int r1[],int b,int m,int e){ int i=b; int j=m+1; int
2020-06-29 09:43:45
原创 Leetcode_num10_Populating Next Right Pointers in Each Node
題目： Populate each next pointer to point to its next right node. If there is no next right node, the next pointer shou
2020-02-20 19:28:43
原创 中文詞性標註解釋一覽表
Definitions of Chinese Part-of-Speech 中文詞性標註(33) [1] AD 副詞 Adverbs [2] AS 語態詞 --- 了 [3] BA
2020-02-20 19:28:43
原创 Leetcode_num14_Roman to Integer
題目： Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 題目意
2020-02-20 19:28:43
原创 Leetcode_num13_Climbing Stairs
題目： You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps
2020-02-20 19:28:43
原创 Leetcode_num8_Binary Tree Preorder Traversal
題目：Given a binary tree, return the preorder traversal of its nodes' values. 此題即爲二叉樹的前序遍歷，遞歸的方法很簡單：先節點再左子樹再右子樹；迭代的方法可以利
2020-02-20 19:28:43
原创 Leetcode_num9_Binary Tree Inorder Traversal
同num8一樣，此題考查的是二叉樹的中序遍歷，即先左子樹再節點再右子樹、 使用迭代法時，採用將節點和左子樹均壓入棧的方法，當左子樹爲NULL時，將top節點彈出，並存入結果列表，將next指針指向該節點的右子樹 代碼如下： /** *
2020-02-20 19:28:43
原创 Leetcode_num15_Maximun Subarray
題目：Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For exam
2020-02-20 19:28:43
原创 leetcode_num112_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 t
2020-02-20 19:28:43
原创 Leetcode_num11_Remove Duplicates from Sorted List
題目： Given a sorted linked list, delete all duplicates such that each element appear only once. 這道鏈表的題也比較簡單，目標是爲了去重，只是需要
2020-02-20 19:28:43