計算2進位有幾個1
191. Number of 1 Bits
2022-09-27
2022-09-27
[LeetCode] 190. Reverse Bits
將2進位數字反轉
190. Reverse Bits
2022-09-27
[LeetCode] 185. Department Top Three Salaries
查出每個部門前3名資料
185. Department Top Three Salaries
2022-09-26
[LeetCode] 171. Excel Sheet Column Number
判斷Excel欄位名是第幾個欄位
171. Excel Sheet Column Number
2022-09-26
[LeetCode] 169. Majority Element
找出陣列中出現最多次的數字
169. Majority Element
2022-09-26
[LeetCode] 168. Excel Sheet Column Title
欄位數轉成excel的欄位名
168. Excel Sheet Column Title
2022-09-26
[LeetCode] 160. Intersection of Two Linked Lists
找到2個LinedList第一個共同ListNode
160. Intersection of Two Linked Lists
2022-09-23
[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
檢查是否為循環的Linked List
141. Linked List Cycle
2022-09-23
[LeetCode] 125. Valid Palindrome
檢查檢查數字英文正反向是否相同, 忽略其它符號
125. Valid Palindrome
2022-09-23
[LeetCode] 121. Best Time to Buy and Sell Stock
計算一元素減它之前元素, 找出最大值
121. Best Time to Buy and Sell Stock
2022-09-23
[LeetCode] 119. Pascal's Triangle II
和[LeetCode] 118. Pascal's Triangle幾乎一樣, 只要回傳最後List即可
119. Pascal's Triangle II
2022-09-23
[LeetCode] 118. Pascal's Triangle
如圖所示, 給n行, 每行元素數遞增, 元素值為上一陣列2個鄰近元素相加Taiwan is a country. 臺灣是我的國家
118. Pascal's Triangle
2022-09-23
[LeetCode] 88. Merge Sorted Array
將2個已排序陣列合併成一個排序陣列
88. Merge Sorted Array
2022-09-23
[LeetCode] 83. Remove Duplicates from Sorted List
移除已排序陣列中重復的項目
83. Remove Duplicates from Sorted List
2022-09-23
[LeetCode] 70. Climbing Stairs
計算n階梯若走1步或2步時, 有幾種走法
70. Climbing Stairs
2022-09-23
[LeetCode] 95. Unique Binary Search Trees II
和96題一樣題目, 結果是回傳所有可能的TreeNode
Unique Binary Search Trees II
2022-09-22
[LeetCode] 96. Unique Binary Search Trees
找出1~n可組成幾種BST
Unique Binary Search Trees
2022-09-22
[LeetCode] 69. Sqrt(x)
手動開根號
69. Sqrt(x)
2022-09-21
[LeetCode] 67. Add Binary
將2進位字串作加總
67. Add Binary
2022-09-21
[LeetCode] 66. Plus One
陣列最後一元素加1, 但若>9要進位到前一元素, 如同十進位數字一樣
66. Plus One
2022-09-21
[LeetCode] 58. Length of Last Word
回傳最後一字的字數
58. Length of Last Word
2022-09-21
[LeetCode] 35. Search Insert Position
找到一個數字可插入至已排序陣列的位置回傳
35. Search Insert Position
2022-09-21
[LeetCode] 27. Remove Element
將陣列內指定的元素移除, 後面的元素往前推
27. Remove Element
2022-09-20
[LeetCode] 21. Merge Two Sorted Lists
給2個已排序陣列, 合併成一個排序陣列
2022-09-20
[LeetCode] 26. Remove Duplicates from Sorted Array
將已排序陣列, 計算共幾個不重覆的數目, 不用改陣列長度, 只要把陣列前面不重覆數字再次寫入即可
26. Remove Duplicates from Sorted Array
2022-09-20
[LeetCode] 109. Convert Sorted List to Binary Search Tree
將SortedList轉成符合BST的TreeNode
Convert Sorted List to Binary Search Tree
2022-09-20
[LeetCode] 106. Construct Binary Tree from Inorder and Postorder Traversal
由postorder 和inorder反推, 作出原本的TreeNode回傳
Construct Binary Tree from Inorder and Postorder Traversal
2022-09-20
[LeetCode] 2236. Root Equals Sum of Children
固定一個root配左右腳, 若是左右腳加總等於root回傳true, 否則false
Root Equals Sum of Children
2022-09-20
[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal
由preorder和inorder反推, 作出原本的TreeNode回傳
Construct Binary Tree from Preorder and Inorder Traversal
2022-09-19
[LeetCode] 99. Recover Binary Search Tree
把TreeNode依BST原則將數字放到正確位置
Recover Binary Search Tree
2022-09-19
[LeetCode] 559. Maximum Depth of N-ary Tree
2022-09-19
[LeetCode] 589. N-ary Tree Preorder Traversal
每層由左而右往下找, 依序由最淺那個Node先列入list回傳
N-ary Tree Postorder Traversal
2022-09-19
[LeetCode] 590. N-ary Tree Postorder Traversal
每層由左而右往下找, 依序由最深那個Node先列入list回傳
Evaluate Boolean Binary Tree
2022-09-19
[LeetCode] 2331. Evaluate Boolean Binary Tree
左右腳值以上一層node指示計算, 回傳最後結果
Evaluate Boolean Binary Tree
2022-09-19
[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
給2個一模一樣的TreeNode, 和隨機一個original內的一node當作target, 找出cloned內另一個一樣的的回傳
Find a Corresponding Node of a Binary Tree in a Clone of That Tree
2022-09-07
[RabbitMQ] 呼叫RabbitMQ API傳送訊息
呼叫RabbitMQ API傳送訊息
2022-09-07
[RPA] Call Automation 360 IQ Bot API
使用Microsoft.AspNet.WebApi呼叫Automation 360 IQ Bot的API語法
帳號需要權限: AAE_Basic, AAE_IQ Bot Admin
2022-02-14
[SQL] 遮罩
SQL本身有動態遮罩, 但資料倒到測試環境每個人都有ADMIN權限, 還是能看到個資
2022-01-27
[LeetCode] 222. Count Complete Tree Nodes
計算有幾個NodeTaiwan is a country. 臺灣是我的國家
2022-01-26
[設計規格] 資料交換
Linked server = DB Link
2022-01-26
[LeetCode] 199. Binary Tree Right Side View
依序抓每層最右邊的值
2022-01-26
[LeetCode] 20. Valid Parentheses
傳入一串字, 只有[]{}()這6種字元, 檢核左括弧是否都有合理的右括弧
2022-01-25
[LeetCode] 941. Valid Mountain Array
檢查陣列是否遞增及遞減一次
2022-01-24
[LeetCode] 173. Binary Search Tree Iterator
將BST作成迭代器, 從最小的值開始回傳
2022-01-22
[LeetCode] 129. Sum Root to Leaf Numbers
和[LeetCode] 1022. Sum of Root To Leaf Binary Numbers幾乎一樣,
將所有路徑的值由上到下串起來, 當作十進位數字加總
2022-01-22
[LeetCode] 117. Populating Next Right Pointers in Each Node II
比[LeetCode] 116. Populating Next Right Pointers in Each Node要複雜多了~
給的Node不會每層都有left和right, 層數也不一定
一樣要設定每個node的next
2022-01-22
[LeetCode] 116. Populating Next Right Pointers in Each Node
設定每個node的next node為同level右邊那個node
2022-01-21
[LeetCode] 114. Flatten Binary Tree to Linked List
左node都插入右node的上方, 右node作為左node的右node, 左node清掉
2022-01-21
[LeetCode] 113. Path Sum II
找每一條path, 回傳單一path加總等於targetSum的多條path
2022-01-21
[LeetCode] 103. Binary Tree Zigzag Level Order Traversal
由上到下將每一層的值作成一個陣列, 單數層順序左到右, 偶數層則由右到左