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Published: 19/03/2019You are given a grid of 0's and 1's and it's dimension 1 ≤ N,M ≤ 2500 and a number 0 ≤ K ≤ 6. The task is to count the number of rectangles in the grid that have exactly K ones inside it. It has t ... Read moreSource: stackoverflow.com


Published: 19/03/2019after a break for over 6 months I decide to back to my project (for fun and learning) :P Anyway, last time I had a lot of problem with this algorithm, so I decide to rebuild it and it works a lot bett ... Read moreSource: stackoverflow.com

Published: 19/03/2019I am trying to implement an algorithm, that finds the shortest path in the following two dimensional array (from the top left corner, to the right bottom corner): [ [ 'A', 'A', 'A', 'B', 'A' ], [ 'B', ... Read moreSource: stackoverflow.com

Published: 19/03/2019I am trying to merge some overlapping "meeting" intervals. Given intervals: [{0, 1}, {3, 5}, {4, 8}, {10, 12}, {9, 10}] Merged intervals: [{0, 1}, {3, 8}, {9, 12}] My first approach is a double for lo ... Read moreSource: stackoverflow.com

Published: 19/03/2019I don't understand what is the purpose of the decision tree? The way I see it is, it is a series of ifelse. Why don't I just use ifelse instead of using a decision tree? It is because it decreases t ... Read moreSource: stackoverflow.com

Published: 19/03/2019Below is an heapsort sorting algorithm. Inside the heapify function, the variable largest is uninitialized unless if conditions are invoked. Once the buildheap function is invoked, heapify function ca ... Read moreSource: stackoverflow.com

Published: 19/03/2019I am trying to put the elements in list2 inside each of the nested lists in list1 . This is what I have tried so far: list_1 = [[0, 1], [1, 4], [2, 3]] list_2 = [100, 100, 100] store_1 = [] for x in l ... Read moreSource: stackoverflow.com

Published: 19/03/2019Prove by induction that if Quicksort with Explicit Stacking is modified so that the endpoints of the larger sublist are stacked, and the other sublist is sorted first, then the maximum stack size is ... Read moreSource: stackoverflow.com

Published: 19/03/20191KM to 5 KM : X Rs/ KM. 6KM to 15 KM : For 5 km Rs X Rs/KM and then x1 Rs/KM 16KM to 25Km : For 5 km Rs X Rs/KM and 6Km to 15Km x1 rs/Km and 16 to 25 x2 Rs/km <25KM : flat 2Rs/Km for example: If ... Read moreSource: stackoverflow.com

Published: 19/03/2019I am using Opencv for emotion recognition. Every thing is working fine but I want to know what algorithm it is using for training and prediction. Read moreSource: stackoverflow.com

Published: 19/03/2019Since both std::priority_queue and std::set (and std::multiset ) are data containers that store elements and allow you to access them in an ordered fashion, and have same insertion complexity O(log n) ... Read moreSource: stackoverflow.com

Published: 19/03/2019This is an alternative solution to a hackerrank problem that I have solved. My original solution was O(n^2) . I am trying to beat this. The idea is to find a subarray of a given array whose sum is equ ... Read moreSource: stackoverflow.com

Published: 19/03/2019I am trying to split X number of Teams into "play days" which consist of 3 teams per day There is more than one solution to solve this for 15 teams. What is the best approach to find all possible fixt ... Read moreSource: stackoverflow.com

Published: 19/03/2019I'm trying to write a script that counts the number of 'distinct' (or unique) pairs in my array that have a difference equal to a value K . For example, let's say that I have a list that's [a,a,b,c]. ... Read moreSource: stackoverflow.com

Published: 19/03/2019How tug of war backtracking time complexity is equals to n^2? Problem link Read moreSource: stackoverflow.com

Published: 19/03/2019I'm trying to solve a problem of keyword detection. In that, i have a library that contain 50 words to predict. I'm using MFCC to extract the feature of word and got 13*13 dimension vector feature. Th ... Read moreSource: stackoverflow.com

Published: 19/03/2019Interview question: Given an array where any two consecutive elements differ in their values by 1 example: vector<int> vec = { 1, 0, 1, 2, 3, 4,3,2,1,0,1, 2, 1, 2, 3 }; index==>0, 1, 2 ... Read moreSource: stackoverflow.com

Published: 19/03/2019I'm trying to solve an interval calendar problem. Given busy slots as a dataset in a person's outlook calendar and the time required for a meeting (eg: 45 mins) write a method to find an open availa ... Read moreSource: stackoverflow.com

Published: 19/03/2019I'm currently working on a little project where I get one question and three answers and one of them is correct. I need to find this one. Right now I make a request to google and search in the source ... Read moreSource: stackoverflow.com

Published: 18/03/2019I have always wanted to do this but every time I start thinking about the problem it blows my mind because of its exponential nature. The problem solver I want to be able to understand and code is for ... Read moreSource: stackoverflow.com

Published: 18/03/2019I have nary tree of game objects. The user randomly selects some objects in a tree and wants to delete. Problem is that some objects are children of the another. It turns out after each deletion of t ... Read moreSource: stackoverflow.com
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