摘要：
练习： 1. 单纯气息长呼出的练习 goal： 气息稳定性呼出 （建议时长：最少 5min/day） 声音有两层屏障，声带和牙齿 1.1 先通过第二层屏障牙齿进行长呼出练习。 a. 腹式呼吸的方式吸一口气 b. 发‘si’的声音，但是不是真声，基本是气声，保证气不断，直到把腹部的气全部呼完。 c. 阅读全文
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[LeetCode] 232. Implement Queue using Stacks_Easy tag: stack
2019-05-13 05:37 by Johnson_强生仔仔, 280 阅读, 收藏,
摘要：
Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front 阅读全文
[LeetCode] 168. Excel Sheet Column Title_Easy tag: Math
2018-08-17 10:02 by Johnson_强生仔仔, 280 阅读, 收藏,
摘要：
Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: Example 1: Example 2: Example 3: 这个题目实际上就想用2 阅读全文
[LeetCode] 234. Palindrome Linked List_Easy tag: Linked List
2019-05-06 06:27 by Johnson_强生仔仔, 279 阅读, 收藏,
摘要：
Given a singly linked list, determine if it is a palindrome. Example 1: Input: 1->2 Output: false Example 2: Input: 1->2->2->1 Output: true Follow up: 阅读全文
[LeetCode] 255. Verify Preorder Sequence in Binary Search Tree_Medium tag: Preorder Traversal, tree
2018-07-24 06:06 by Johnson_强生仔仔, 279 阅读, 收藏,
摘要：
Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the seq 阅读全文
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