原创 861. Score After Flipping Matrix**
861. Score After Flipping Matrix** https://leetcode.com/problems/score-after-flipping-matrix/ 題目描述 We have a two di
原创 300. Longest Increasing Subsequence**
300. Longest Increasing Subsequence** https://leetcode.com/problems/longest-increasing-subsequence/ 題目描述 Given an u
原创 278. First Bad Version*
278. First Bad Version* https://leetcode.com/problems/first-bad-version/ 題目描述 You are a product manager and current
原创 986. Interval List Intersections**
986. Interval List Intersections** https://leetcode.com/problems/interval-list-intersections/ 題目描述 Given two lists
原创 623. Add One Row to Tree**
623. Add One Row to Tree** https://leetcode.com/problems/add-one-row-to-tree/ 題目描述 Given the root of a binary tree,
原创 912. Sort an Array**
912. Sort an Array** https://leetcode.com/problems/sort-an-array/ 題目描述 Given an array of integers nums, sort the ar
原创 739. Daily Temperatures**
739. Daily Temperatures** https://leetcode.com/problems/daily-temperatures/ 題目描述 Given a list of daily temperatures
原创 通過實例學習 PySpark
通過實例學習 PySpark 最近學習了一下 PySpark, 目標是在工作中能將其用上. 在實踐過程中發現, 通過一個個具體的問題來進行學習, 很多內容掌握起來更爲容易. 因此後面如果寫相關的文章, 也會採用實例的方式來介紹.
原创 1137. N-th Tribonacci Number*
1137. N-th Tribonacci Number* https://leetcode.com/problems/n-th-tribonacci-number/ 題目描述 The Tribonacci sequence Tn
原创 1342. Number of Steps to Reduce a Number to Zero*
1342. Number of Steps to Reduce a Number to Zero* https://leetcode.com/problems/number-of-steps-to-reduce-a-number-
原创 198. House Robber*
198. House Robber* https://leetcode.com/problems/house-robber/ 題目描述 You are a professional robber planning to rob h
原创 172. Factorial Trailing Zeroes*
172. Factorial Trailing Zeroes* https://leetcode.com/problems/factorial-trailing-zeroes/ 題目描述 Given an integer n, r
原创 70. Climbing Stairs*
70. Climbing Stairs* https://leetcode.com/problems/climbing-stairs/ 題目描述 You are climbing a stair case. It takes n
原创 763. Partition Labels**
763. Partition Labels** https://leetcode.com/problems/partition-labels/ 題目描述 A string S of lowercase letters is giv
原创 367. Valid Perfect Square*
367. Valid Perfect Square* https://leetcode.com/problems/valid-perfect-square/ 題目描述 Given a positive integer num, w