Problem https://leetcode.com/problems/closest-binary-search-tree-value/ Solution Time Complexity: O(log(len(tree))) Space Complexity: O(1) (The input and output generally do not count towards the spac ...
Problem https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/ Solution Time Complexity: O(len(tree)) Space Complexity: O(sqrt(len(tree))) (The input and output generally do not count ...
Problem https://leetcode.com/problems/deepest-leaves-sum/ Solution Time Complexity: O(len(tree)) Space Complexity: O(max_depth(tree)) (The input and output generally do not count towards the space com ...
Problem https://leetcode.com/problems/diameter-of-binary-tree/description/ Solution Time Complexity: O(len(tree)) Space Complexity: O(max_depth(tree) * len(leaves)) (The input and output generally do ...
Problem https://leetcode.com/problems/maximum-difference-between-node-and-ancestor/ Solution Time Complexity: O(len(tree)) Space Complexity: O(max_depth(tree)) (The input and output generally do not c ...
Problem https://leetcode.com/problems/minimum-depth-of-binary-tree/description/ Solution Time Complexity: O(len(tree)) Space Complexity: O(max_depth(tree)) (The input and output generally do not count ...
用 AWS EC2 建立新伺服器 建立新個體 開啟 AWS 進入 EC2 在右上角選擇伺服器建置地區 點選「啟動執行個體」以建立新個體 AMI (Amazon Machine Image; 應用程式和作業系統映像) 選擇 SUSE Linux Enterprise Server 15 SP5 (HVM), SSD Volume Type 網路設定 設定儲存：1x 30 GiB gp3 根磁碟區 啟 ...
發聲練習 M-M-I-I-I 1-3-5-3-1 Hamming (M) 的時候空氣送得不夠 共鳴的位置：空氣的流向 / 倍音產生形成的震動 喉位：聲帶的震動 M 轉 I 時保持共鳴與喉頭位置一致 喉位為喇叭的吹嘴 (mouthpiece) 共鳴位置為喇叭口 (bell) 喉位保持在低處 共鳴則向上
發聲練習 Passaggio 練習 唱U，1-2-3-2-1 圓嘴型唱 U 像吹蠟燭一般朝同一個位置吹氣 越後面的音階，空氣流動得越快 發聲位置保持在喉嚨 不使喉位升高 C#4-D4-D#4-D4-C#4 開始 上下唇張開的高度：0 根手指 – 1 根手指 – 2 根手指 – 1 根手指 – 0 根手指
一週心得 音階升高時，會有嘴角往左右移動的壞習慣 ⇒ 手指嘴巴不張開 發聲練習 Chiuso 練習 唱A，1-2 1-3 1-4 1-5 1 → 1-2-1 1-3-1 音階升高前腹部用力 隨時注意保持頭腔（鼻腔、咽腔）開放 上（保持送氣）下（支撐、喉位；注意力從眼睛經喉嚨向肛門而去）展開 要讓聲音更收束 將聲音的位置保持在同一點 呼吸練習 將氣吐盡： 從嘴巴「嘶」地把肺中空氣吐盡 吐氣的同時腹部 ...
