原创 線程有哪些狀態？每個狀態是什麼意思？又是如何切換的？
線程大家都有在使用，但是有時候也僅僅是使用，對它的一些行爲還不是特別的瞭解，今天就來和大家談談線程的狀態這個內容。 首先線程有哪些狀態呢？ 這個問題，我們可以從Java的源代碼中找到的答案，先簡單粗暴，直接貼上代碼，看看線程的狀態有哪些：
2019-08-06 14:39:26
2
原创 音頻接口：MIC, LINE IN, AUX都是些啥
最近一直想內錄自己那臺電鋼的聲音到手機裏，畢竟外錄，會錄製到空氣裏的聲音，還有聲音直接通過手機麥克風錄製效果也不好。 一開始我是買了一根公對公的3.5mm音頻線，直接從電鋼接到手機上，然而並沒有卵用，可能是我直接用公對公直連是沒用的，應該要
2019-07-06 15:08:19
100
原创 797. All Paths From Source to Target
題目 https://leetcode.com/problems/all-paths-from-source-to-target/ Given a directed, acyclic graph of N nodes. Find all
2019-04-02 13:40:55
原创 921. Minimum Add to Make Parentheses Valid
題目 Given a string S of '(' and ')' parentheses, we add the minimum number of parentheses ( '(' or ')', and in any positi
2019-04-02 13:40:55
原创 814. Binary Tree Pruning
題目 https://leetcode.com/problems/binary-tree-pruning/ We are given the head node root of a binary tree, where additional
2019-04-01 13:41:09
原创 890. Find and Replace Pattern
https://leetcode.com/problems/find-and-replace-pattern/ 題目 You have a list of words and a pattern, and you want to know
2019-04-01 13:41:09
原创 894. All Possible Full Binary Trees
題目 https://leetcode.com/problems/all-possible-full-binary-trees/ A full binary tree is a binary tree where each node has
2019-04-01 13:41:09
1
原创 942. DI String Match
題目 Given a string S that only contains "I" (increase) or "D" (decrease), let N = S.length. Return any permutation A of [
2019-04-01 13:41:09
原创 961. N-Repeated Element in Size 2N Array
題目 In a array A of size 2N, there are N+1 unique elements, and exactly one of these elements is repeated N times. Return
2019-03-29 13:22:35
原创 1008. Construct Binary Search Tree from Preorder Traversal
題目 Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search
2019-03-29 13:22:34
原创 701. Insert into a Binary Search Tree
題目 https://leetcode.com/problems/insert-into-a-binary-search-tree/ Given the root node of a binary search tree (BST) and
2019-03-27 13:18:43
原创 535. Encode and Decode TinyURL
題目 https://leetcode.com/problems/encode-and-decode-tinyurl/ Note: This is a companion problem to the System Design probl
2019-03-27 13:18:43
原创 938. Range Sum of BST
題目 Given the root node of a binary search tree, return the sum of values of all nodes with value between L and R (inclus
2019-03-26 13:18:21
原创 807. Max Increase to Keep City Skyline
題目 In a 2 dimensional array grid, each value grid[i][j] represents the height of a building located there. We are allowe
2019-03-26 13:18:21
原创 坑！IDEA如何將依賴的模塊導入Jar包
如果想將依賴的庫在導出jar的時候也可以用到，那麼直接從右邊的【Available Elements】中拖到左邊是沒用的。 對着右邊的東西點右鍵，有兩個菜單 1【Put into Output Root】 2【Extract into O
2019-03-26 13:18:21