原创 21 - Merge Two Sorted Lists - LeetCode
Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes o
2018-08-22 11:26:48
原创 關於編程素養
個人記錄一下，想到的幾點編程的基本素養： 1. 參數檢查非常重要，在每個單獨的函數中，開始都應該進行參數檢查。 如果參數爲空，則拋異常至上一級，或者根據需求賦默認值，且輸出操作日誌。 2. 每個函數體，記得放入try catch
2018-08-22 11:26:48
原创 [bug] Field 'id' doesn't have a default value
在使用 spring + Hibernate + JPA 連接 Mysql時，報錯如下： bug：Field 'id' doesn't have a default value 原因是因爲自己粗心，主鍵id並沒有自增，沒有勾選：AUTO_
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原创 258 - Add Digits
Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: G
2018-08-22 11:26:48
原创 分治法 - 歸併排序
歸併排序是分治法的典型應用，思想如下： divide：divide the array to 2 subarray conquer：reverse in 2 subarray，if only one elem ，return combin
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3
原创 100 - SameTree
Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if t
2018-08-22 11:26:48
原创 8 - String to Integer (atoi)
Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a ch
2018-08-22 11:26:48
原创 爲 vector 重載 << (輸出操作符)
代碼如下： #include <iostream> #include <vector> using namespace std; ostream& operator<< (ostream& out, vector<string>& _
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1
原创 2 - Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each
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原创 1- Two Sum
Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum s
2018-08-22 11:26:48
原创 169- Majority Element
Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/
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原创 中國將帥象棋問題
#include <stdio.h> #define HALF_BITS_LENGTH 4 #define FULLMASK 255 // 1111 1111 #define LMASK (FULLMASK << HALF_BIT
2018-08-22 11:24:35
2