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Finding the largest sub-array in an array is a classic question ,《AlgorithmIn the introduction, there is a classic solution for divide and conquer, and time complexity can be O (nlgn ). This issue is discussed in the beauty of programming and the pearl of programming. One of the dynamic planning practices is very delicate, the idea is very good, and the time complexity is optimized to O (n ). The two solutions mentioned above are very enlightening

Let us, for example, choose the first 100 largest data from 100 million numbers.First we analyze: since we want to select the top 100 of the largest data, we build a heap of size 100 (when the heap is built to find the maximum heap of rules established, that is, each root node is greater than its child node), and then the rest of the remaining data if required to insert the heap, non-conforming directly dis

Question Find the largest subtree in a binary tree, which is a binary search tree. The largest subtree refers to the subtree with the largest number of nodes. This topic is analyzed to find the largest subtree in a binary tree. The subtree must be a binary search tree (BST ). The sub-tree concept needs to be focused. A

For an array, divide as much as possible into two halves (binary), plus and max consecutive word groups either on the left, or on the right, or across the middle, part on the left, and part to the right.Then only the addition of the left half of the array and the largest continuous sub-array of the same and the maximum number of consecutive sub-arrays to find the right half of the array and the maximum number of contiguous array of the same as the max

[Sword refers to Offer learning] [interview question 31: the largest sum of consecutive sub-arrays], sword refers to offerQuestion: enter an integer array with a positive or negative number in the array. One or more consecutive integers in the array form a sub-array. Returns the maximum value of the sum of all sub-arrays. The time complexity is O (n ). Example: For example, the input array is {1,-2, 3, 10,-4, 7, 2,-5}, and the maximum sub-array is {3,

1 packagezuoye;2 3 Importjava.util.Scanner;4 5 6 public classMaxsubarray {7 public Static voidmain (string[] Args) {8Scanner scan =NewScanner (system.in);9 Ten one //input Data aSystem.out.println ("please Enter Array length"); - intn =Scan.nextint (); - int[] A =New int[n]; the -System.out.println ("please Enter Array elements"); - for(inti = 0;i ) - { +a[i] =Scan.nextint (); - } + scan.close (); a /

of a function is not the maximum value of a sub-array or a sub-array, but a flag for judging whether the input is valid. If the function returns the maximum values of sub-arrays, what should be returned when a null pointer is input? Returns 0? So how do users of this function distinguish between invalid input and the maximum value of the sub-array is exactly 0? Based on this consideration, I think that the sub-array and the maximum value are put in the parameter list as a reference, and the fun

Largest Rectangular Area in a Histogram, rectangular Address: https://oj.leetcode.com/problems/largest-rectangle-in-histogram/, did not do this question at the beginning, but in doing https://oj.leetcode.com/problems/maximal-rectangle/it is a very important step to use largest Rectangular Area in a Histogram algorithm. GivenNNon-negative integers representing th

Address: https://oj.leetcode.com/problems/largest-rectangle-in-histogram/, did not do this question at the beginning, but in doing https://oj.leetcode.com/problems/maximal-rectangle/it is a very important step to use largest rectangular area in a histogram algorithm. GivenNNon-negative integers representing the histogram's Bar Height where the width of each bar is 1, find the area of

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1 problem: Returns the number of the largest interconnected subarray in a two-dimensional integer array2 idea: To decompose the two-dimensional array of n*m, decomposed into n one-dimensional arrays, and then the largest subarray of n one-dimensional arrays and note the subscript of the largest one-dimensional sub-array of each row, such as 2-5, which is divided

Returns the and of the largest sub-arrays in an integer array, and refines the analysis:1, in all sub-arrays ending in element tail, select the element and the largest sub-array, TAIL=1,2...N.2, and the largest sub-array ending with element K is the TAIL-1 that contains the end of the element and the largest subarray,

Lintcode: Kth largest Element, lintcodekth Find K-th largest element in an array.NoteYou can swap elements in the arrayExampleIn array [9,3,2,4,8], the 3rd largest element is 4In array [1,2,3,4,5], the 1st largest element is 5, 2nd largest element is 4, 3rd

Throw the question:Ask an array such as L = [0, 1, 2, 3,-4, 5,-6], and the number of the largest contiguous subarray of the array as the result of [0,1,2,3,-4,5] and 7Problem Analysis:The problem is simple, the direct violence Law, on the code.#-*-coding:utf-8-*-#Date: 2018/6/9 7:46#Author: Small mouse#the and of the largest contiguous SubarrayL = [0, 1, 2, 3,-4, 5,-6]#Brute Force SolutiondefViolence (L =[]

Task requirements: Enter an array of shapes, with positive numbers in the array and negative values.One or more consecutive integers in an array make up a sub-array, each of which has a and.If the array a[0] ... A[j-1] next to each other, allowing a[i-1], ... A[n-1], a[0] ... A[J-1] and the largest. Returns the position of the largest subarray at the same time.The maximum value for the and of all sub-arrays

First, title:N Returns the and of the largest subarray in an integer array.Second, requirements:(1) n Enter an array of shapes with positive and negative numbers in the array. (2) a contiguous integer or integers in an n array make up a sub-array, each of which has a and. (3) n if array a[0] ... A[j-1] next to each other, allowing a[i-1], ... A[n-1], a[0] ... A[J-1] and the largest. (4) n returns the positi

Project members: Kangzhong, Wang Zhaobo.1. Design ideas:(1) The outer while loop control end (i=n) stops.(2) Inner calculation: According to the method of non-circular array, whenever the outer layer I is incremented by 1, the array is updated, the number of i-1 becomes the nth number of the array,The number of I becomes the first number of the array and the solution of the largest subarray. and records the starting position coordinates of the

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Question: Give You A 01 matrix of N * n, and find Mina and the rectangle of the largest 1 in it. Analysis: DP, monotonous queue. The format of the input is changed. We break down the problem into the largest rectangle, that is, solving the largest rectangle in the graph with K behavior bottom edge, and then merging to find the

There is an input array in the question. The numbers in the array are all integers, which may be positive, negative, or 0. The sum of the largest subarrays in the input array is required. Question Analysis In the face of such a problem, we need to carefully analyze the conditions and requirements of the problem. This problem provides an input array containing several elements. Each element can be a positive number, a negative number, or 0. The questio