Echo's Home

698. Partition to K Equal Sum Subsets

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

Description

Given an integer array nums and an integer k, return true if it is possible to divide this array into k non-empty subsets whose sums are all equal.

464. Can I Win

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

464. Can I Win

Description

In the “100 game” two players take turns adding, to a running total, any integer from 1 to 10. The player who first causes the running total to reach or exceed 100 wins.

61. Rotate List

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

61. Rotate List

Description

Given the head of a linkedlist, rotate the list to the right by k places.

319. Bulb Switcher

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

319. Bulb Switcher

Description

There are n bulbs that are initially off. You first turn on all the bulbs, thenyou turn off every second bulb.

542. 01 Matrix

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

542. 01 Matrix

Description

Given an m x n binary matrix mat, return the distance of the nearest 0 for each cell.

2964. Number of Divisible Triplet Sums

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

2964. Number of Divisible Triplet Sums

Description

Given a 0-indexed integer array nums and an integer d, return the number of triplets (i, j, k) such that i < j < k and (nums[i] + nums[j] + nums[k]) % d == 0.

384. Shuffle an Array

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

384. Shuffle an Array

Description

Given an integer array nums, design an algorithm to randomly shuffle the array. All permutations of the array should be equally likely as a result of the shuffling.

156. Binary Tree Upside Down

Posted on 2025-03-17 Edited on 2025-04-21 In Leetcode

156. Binary Tree Upside Down

Description

Given the root of a binary tree, turn the tree upside down and return the new root.

123. Best Time to Buy and Sell Stock III

Posted on 2025-03-16 Edited on 2025-04-21 In Leetcode

123. Best Time to Buy and Sell Stock III

Description

You are given an array prices where prices[i] is the price of a given stock on the i^th day.

244. Shortest Word Distance II

Posted on 2025-03-16 Edited on 2025-04-21 In Leetcode

244. Shortest Word Distance II

Description

Design a data structure that will be initialized with a string array, and then it should answer queries of the shortest distance between two different strings from the array.