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Published: 23/02/2017I was given the following problem as an assignment but it is really confusing me: Consider the BFS algorithm. Given a digraph G = (V, E) and a starting vertex s ∈ V, this algorithm computes for each v ... Read moreSource: stackoverflow.com


Published: 23/02/2017I have a list of Booking which contains startDate and endDate . I have to find the day which is the busiest in terms of bookings. class Booking { Date startDate; Date endDate; } Example: 20161012 to ... Read moreSource: stackoverflow.com

Published: 23/02/2017I need to find all possible words that could be made using letters specified by the user. User can use "?"  as wildcards (up to 2 wildcards). Max input is 15 characters, including those wildcards. Ex ... Read moreSource: stackoverflow.com

Published: 23/02/2017I'm testing an algorithm in a console application. I need to print the number of prime numbers in the range 1 to 10^15 . EDIT: Constraint : lastfirst<=10^9 This code works but it needs to take les ... Read moreSource: stackoverflow.com

Published: 23/02/2017I'm wondering if there's an efficient method of finding all nonoverlapping submatrices in a matrix in Python. Let's suppose I have the following matrix (which is in fact a list of lists): def genera ... Read moreSource: stackoverflow.com

Published: 23/02/2017I was asked this question and could not come up with a solution, hope to find it here. We need a function that receives a number (X) and a string, it needs to print that string X number of times, with ... Read moreSource: stackoverflow.com

Published: 23/02/2017I recently came across the following problem that was said to have been asked in a technical interview: Given the preorder traversal of a binary search tree, how do we identify the leaf nodes without ... Read moreSource: stackoverflow.com

Published: 23/02/2017Here the scenario: everyday I receive a message. the message is containing an Identifier made of GUID 128 bit and the date it was sent. Now, I need a way to check if a message I receive was received a ... Read moreSource: stackoverflow.com

Published: 23/02/2017In the context of a quantum physics experiment, I am interested in estimating some parameters of the hidden Markov model describing my experiments. I am aware of the BaumWelch algorithm for estimatin ... Read moreSource: stackoverflow.com

Published: 23/02/2017Say I have a Cartesian coordinate system with points that have x,y variable. I wanna make a red black tree , so i can compare the points with x or y coordinate . But there is not a 2d redblack tree i ... Read moreSource: stackoverflow.com

Published: 23/02/2017I have a df: [name] [cnt] [num] [place] [y] AAAA 12 20182.0 5.0 1.75 BBBB 12 20182.0 7.0 2.00 AAAA 10 20381.0 10.0 9.25 BBBB 10 20381.0 12.0 18.75 EEEE 12 21335.0 1.0 0.00 RRRR 12 21335.0 8.0 3.00 CCC ... Read moreSource: stackoverflow.com

Published: 23/02/2017Rebecca takes part in competition and has to drink 75 ml of water every 30 minutes. This competition is to make the people aware of the needs of children. The competition started on Monday morning at ... Read moreSource: stackoverflow.com

Published: 23/02/2017I have written a dynamic programming algorithm that finds the total amount of subsets that sum up to a target value. However, I am having trouble developing a function to recover the solution (that is ... Read moreSource: stackoverflow.com

Published: 23/02/2017I want to find whether a point lies inside a rectangle or not. The rectangle can be oriented in any way, and need not be axis aligned. One method I could think of was to rotate the rectangle and point ... Read moreSource: stackoverflow.com

Published: 23/02/2017I am trying to group 2M+ "person" records into ~500k1M unique identities based on names and some other data (email, institution). I have done some work parsing out family names and given names, but t ... Read moreSource: stackoverflow.com

Published: 23/02/2017I have a JSON object which has so many nested arrays in it.If I want to search for a particular element how can I do that ? var jsonObject={ "key":["value", ["layer1_element1" , "layer1_element2" , [" ... Read moreSource: stackoverflow.com

Published: 23/02/2017This is a variation of the popular El Goog problem. Consider the following scheduling problem: There are n jobs, i = 1..n. There is 1 super computer and unlimited PCs. Each job needs to be preprocess ... Read moreSource: stackoverflow.com

Published: 23/02/2017I have 2 strings, let's call first one base string and another one as the input string. I am working to devise an algorithm to find out how many characters of the base string fall in their order insid ... Read moreSource: stackoverflow.com

Published: 23/02/2017I've been scouring github and the web, and I've not been able to find a proper 2d concave hull algorithm in C/C++. OpenCV only supports ConvexHull, and PCL's Qhull implementation is not thread safe. I ... Read moreSource: stackoverflow.com

Published: 23/02/2017How could we generate all possible permutations of n (given) distinct items taken r at a time where any item can be repeated any number of times? Combinatorics tell me that there will be n^r of them, ... Read moreSource: stackoverflow.com

Published: 23/02/2017I am stuck on a recurrence question. T(n)=T(n/2)+ log N What I have right now is that: T(N) = T(N/2) + log N T(N/2) = T(N/4) + log(N/2) ... T(N) = T(N/ 2^k) + sum[i=0 and k {log (N/2^i)}] I am stuck o ... Read moreSource: stackoverflow.com
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