80. Remove Duplicates from Sorted Array II
Given an integer array nums sorted in non-decreasing order , remove some duplicates in-place such that each unique element appears at most twice . The relative order of the elements should be kept the same .
2658. Maximum Number of Fish in a Grid
You are given a 0-indexed 2D matrix grid of size m x n, where (r, c) represents:
209. Minimum Size Subarray Sum
Given an array of positive integers nums and a positive integer target, return the minimal length of a subarray whose sum is greater than or equal to target. If there is no such subarray, return 0 instead.
1382. Balance a Binary Search Tree
Given the root of a binary search tree, return a balanced binary search tree with the same node values. If there is more than one answer, return any of them .
3472. Longest Palindromic Subsequence After at Most K Operations
You are given a string s and an integer k.
3471. Find the Largest Almost Missing Integer
You are given an integer array nums and an integer k.
3462. Maximum Sum With at Most K Elements
You are given a 2D integer matrix grid of size n x m, an integer array limits of length n, and an integer k. The task is to find the maximum sum of at most k elements from the matrix grid such that: