SQL Window FunctionsWindow function performs after “FROM, JOIN, WHERE, GROUP BY, HAVING”, before “ORDER　BY, LIMIT, SELEC

SQL Categories1 Computing Ratios Compute ratio / percentage Given user activities history / system logs Examples Calcula

Solution to LeetCode 62 Unique Paths & LeetCode 63 Unique Paths II . LeetCode 62Unique Paths (Medium) [link] 1] Recu

Solution to LeetCode 120 Triangle. LeetCode 120Triangle (Medium) [link] Define dp[i][j] as the minimum path sum from top

Solution to LeetCode 303 Range Sum Query - Immutable. LeetCode 303Range Sum Query - Immutable (Easy) [link] 1] Brute For

Solution to LeetCode 174 Dungeon Game. LeetCode 174Dungeon Game (Hard) [link] The question asks for the minimum hp at K

Solution to LeetCode 309 Best Time to Buy and Sell Stock with Cooldown & LeetCode 714 Best Time to Buy and Sell Stoc

Solution to LeetCode 121 Best Time to Buy and Sell Stock & LeetCode 122 Best Time to Buy and Sell Stock II & Lee

Solution to LeetCode 152 Maximum Product Subarray. LeetCode 152Maximum Product Subarray (Medium). [link] To find the max

Solution to LeetCode 740 Delete and Earn. LeetCode 740Delete and Earn (Medium). [link] 1] Bottom-up DP class Solution(ob

Solution to LeetCode 70 Climbing Stairs & LeetCode 746 Min Cost Climbing Stairs. LeetCode 70Climbing Stairs (Easy).

Solution to LeetCode 561 Array Partition I and LeetCode 628 Maximum Product of Three Numbers LeetCode 561Array Partition