On an infinite number line (x-axis), we drop given squares in the order they are given. The i-th square dropped (positions[i] = (left, side_length)) is a square with the left-most point being positions[i][0] and sidelength positions[i][1]. The square…

2020-01-08 10:16:37 一.Falling squares 问题描述: 问题求解: 本题其实也是一条经典的区间问题,对于区间问题,往往可以使用map来进行区间的维护操作. class Interval { int start; int end; int height; public Interval(int start, int end, int height) { this.start = start; this.end = end; this.height = height;…

On an infinite number line (x-axis), we drop given squares in the order they are given. The i-th square dropped (positions[i] = (left, side_length)) is a square with the left-most point being positions[i][0] and sidelength positions[i][1]. The square…

题目如下: On an infinite number line (x-axis), we drop given squares in the order they are given. The i-th square dropped (positions[i] = (left, side_length)) is a square with the left-most point being positions[i][0] and sidelength positions[i][1]. The…

线段树实现.很多细节值得品味 都在注释里面了 class SegTree: def __init__(self,N,query_fn,update_fn): self.tree=[0]*(2*N+2) # 最后一个节点有可能无用 ,但是确保树是完全的 self.lazy=[0]*(N+1) self.N=N self.h=0 while ((1<<self.h) < N ): self.h=self.h+1 self.query_fn=query_fn self.update_fn=up…

Given a set of words (without duplicates), find all word squares you can build from them. A sequence of words forms a valid word square if the kth row and column read the exact same string, where 0 ≤ k < max(numRows, numColumns). For example, the wor…

Given a set of words (without duplicates), find all word squares you can build from them. A sequence of words forms a valid word square if the kth row and column read the exact same string, where 0 ≤ k < max(numRows, numColumns). For example, the wor…

原题链接在这里:https://leetcode.com/problems/perfect-squares/ 题目: Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n…

https://leetcode.com/problems/squares-of-a-sorted-array/ Given an array of integers A sorted in non-decreasing order, return an array of the squares of each number, also in sorted non-decreasing order. Example 1: Input: [-4,-1,0,3,10] Output: [0,1,9,…

On an infinite number line (x-axis), we drop given squares in the order they are given. The i-th square dropped (positions[i] = (left, side_length)) is a square with the left-most point being positions[i][0] and sidelength positions[i][1]. The square…