Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value. If target is not found in the array, return [-1, -1].
Given an array of strings strs, group the anagrams together. You can return the answer in any order.
You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise).
Given a collection of numbers, nums, that might contain duplicates, return all possible unique permutations in any order.
You are given a 0-indexed array of integers nums of length n. You are initially positioned at nums[0]. Each element nums[i] represents the maximum length of a forward jump from index i. In other words, if you are at nums[i], you can jump to any nums[i + j] where: 0 <= j <= nums[i] and i + j < n. Return the minimum number of jumps to reach nums[n - 1].
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining.
Given an unsorted integer array nums, return the smallest missing positive integer.
Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numbers sum to target.
Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. You may return the combinations in any order.
Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
Given a sorted array of distinct integers and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order.
Given an array of integers heights representing the histogram’s bar height where the width of each bar is 1, return the area of the largest rectangle in the histogram.
Write a program to solve a Sudoku puzzle by filling the empty cells.
Given the array nums after the possible rotation and an integer target, return the index of target if it is in nums, or -1 if it is not in nums.
Given an array of integers nums, find the next permutation of nums.