LF.391.Determine If Array Is Min Heap

Determine if the given integer array is min heap.

 1 public class Solution {
 2   public boolean isMinHeap(int[] array) {
 3     // Write your solution here
 4     if (array == null || array.length == 0) {
 5         return true ;
 6     }
 7     int pre = array[0] ;
 8     for (int i = 1; i<array.length; i++ ) {
 9         if (pre > array[i]) {
10             return false ;
11         }
12     }
13     return true ;
14   }
15 }

原文地址:https://www.cnblogs.com/davidnyc/p/8685555.html

时间: 2024-11-10 08:19:15

LF.391.Determine If Array Is Min Heap的相关文章

Min Heap in Kotlin

class MinHeap constructor(maxSize_: Int) { var size = 0 var maxSize = maxSize_ var heapArray: Array<Int>? = null companion object { const val FRONT = 1 } init { size = 0 heapArray = Array(maxSize,{0}) heapArray!![0] = Int.MIN_VALUE } private fun par

Google 面试题:Java实现用最大堆和最小堆查找中位数 Find median with min heap and max heap in Java

Google面试题 股市上一个股票的价格从开市开始是不停的变化的,需要开发一个系统,给定一个股票,它能实时显示从开市到当前时间的这个股票的价格的中位数(中值). SOLUTION 1: 1.维持两个heap,一个是最小堆,一个是最大堆. 2.一直使maxHeap的size大于minHeap. 3. 当两边size相同时,比较新插入的value,如果它大于minHeap的最大值,把它插入到minHeap.并且把minHeap的最小值移动到maxHeap. ...具体看代码 1 /*********

C# min heap implentation

public class Heap< T> where T : IComparable { private List< T> elements = new List<T>(); public int GetSize() { return elements.Count; } public T GetMin() { return this.elements.Count > 0 ? this.elements[0] : default(T); } public void

IE Array Object Heap Spraying

Array Object Heap Spraying Jscript9中的Array对象是一个很有意思的东西,由于数组的便利性,我们可以用数组来做很多事情,比如修改数组长度来实现任意地址的读写.利用Array的vftable进行信息泄露等等.在CanSecWest 2014上ga1ois的讲题<The Art of Leaks – The Return of Heap Feng Shui>中提到了由于jscript9引擎中ArrayData的对齐问题,可以通过构造特定的Array来造成信息泄露

[email&#160;protected] Implementation of minimal heap

A binary heap is a heap data struc­ture cre­ated using a binary tree. binary tree has two rules - Binary Heap has to be com­plete binary tree at all lev­els except the last level. This is called shape prop­erty. All nodes are either greater than equa

Kth Smallest Element in Unsorted Array

(referrence: GeeksforGeeks, Kth Largest Element in Array) This is a common algorithm problem appearing in interviews. There are four basic solutions. Solution 1 -- Sort First A Simple Solution is to sort the given array using a O(n log n) sorting alg

【数据结构】堆heap

本节研究堆heap的相关操作实现: 堆 说明几点 (1)堆分为大根堆和小根堆:大根堆的根为最大值,每一个节点的值都不小于其孩子的值: (2)可以利用大根堆实现升序排序:主要是利用大根堆的头和需要排序的最后一个数字交换的思想: (3)使用大根堆实现最大优先级队列,类似stl中queue的操作,只是对于元素在队列中的元素优先级是不一样的,在最大优先级中,队列头为值最大元素:可利用大根堆来维护一个最大优先级队列:向优先级队列中push元素,类似像堆的末尾添加一个元素,然后使用_makeHeapUp寻找

Lintcode: Heapify &amp;&amp; Summary: Heap

Given an integer array, heapify it into a min-heap array. For a heap array A, A[0] is the root of heap, and for each A[i], A[i * 2 + 1] is the left child of A[i] and A[i * 2 + 2] is the right child of A[i]. Example Given [3,2,1,4,5], return [1,2,3,4,

数据结构之Heap (Java)

Heap简介 Heap译为“堆”,是一种特殊的树形数据结构,它满足所有堆的特性:父节点的值大于等于子节点的值(max heap),或者小于等于子节点的值(min heap).对于max heap 根节点的值为整个树最大值,反之亦然,min heap 根节点的值为整个树最小值.本文采用Java编程语言简单实现min heap. Java Heap 对于大多数应用来说,Java堆 (Java Heap) 是Java虚拟机所管理的内存中最大的一块.Java堆是被所有线程共享的一块内存区域,在虚拟机启动