• 766. Toeplitz Matrix
• 581. Shortest Unsorted Continuous Subarray
• 605. Can Place Flowers
• 628. Maximum Product of Three Numbers
• 643. Maximum Average Subarray I
• 665. Non-decreasing Array
• 674. Longest Continuous Increasing Subsequence
• 697. Degree of an Array
• 717. 1-bit and 2-bit Characters
• 746. Min Cost Climbing Stairs
• 747. Largest Number At Least Twice of Others
• 566. Reshape the Matrix
• 830. Positions of Large Groups
• 840. Magic Squares In Grid
• 849. Maximize Distance to Closest Person
• 888. Fair Candy Swap
• 896. Monotonic Array
• 914. X of a Kind in a Deck of Cards
• 941. Valid Mountain Array
• 950. Reveal Cards In Increasing Order
• 977. Squares of a Sorted Array
• 119. Pascal's Triangle II
• 15. 三数之和
• 16. 3Sum Closest
• 26. Remove Duplicates from Sorted Array
• 27. Remove Element
• 35. Search Insert Position
• 53. Maximum Subarray
• 88. Merge Sorted Array
• 121. Best Time to Buy and Sell Stock
• 122. Best Time to Buy and Sell Stock II
• 118. Pascal's Triangle
• 704. 二分查找
• 189. Rotate Array
• 216. Combination Sum III
• 217. Contains Duplicate
• 219. Contains Duplicate II
• 238. Product of Array Except Self
• 414. Third Maximum Number
• 442. Find All Duplicates in an Array
• 448. Find All Numbers Disappeared in an Array
• 532. K-diff Pairs in an Array