Frontier_Setter的博客

https://leetcode.com/problems/perfect-squares/Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n.Example 1:Input: n = 12...

https://leetcode.com/problems/water-and-jug-problem/You are given two jugs with capacitiesxandylitres. There is an infinite amount of water supply available. You need to determine whether it is ...

https://leetcode.com/problems/bulb-switcher/There arenbulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every thi...

https://leetcode.com/problems/random-pick-index/Given an array of integers with possible duplicates, randomly output the index of a given target number. You can assume that the given target number ...

https://leetcode.com/problems/continuous-subarray-sum/Given a list ofnon-negativenumbers and a targetintegerk, write a function to check if the array has a continuous subarray of size at least ...