hackerrank test

Link: coin on the table At the beginning, I tried to use DFS for a long time. After reading the problem, you can understand that dynamic planning is required. Set a three-dimensional array DP, where DP [I] [J] [k] indicates the minimum modification

King Robert has 7 kingdoms under his rule. he gets to know from a raven that the Dothraki are going to wage a war against him soon. but, he knows the Dothraki need to cross the narrow river to enter his dynasty. there is only one bridge that

Given two integers:LAndR Limit L ≤ A ≤ B ≤ r, find outAXORB. Input Format The first line containsLThe first line containsR Data range 1 ≤ L ≤ r ≤103 Output Format Maximum exclusive or sum of outputs Question: 1 import java.io.*; 2 import java.util.

Link: Pairs This is the deformation of the two sum problem! The two sum problem requires that the two numbers in the array and the number is exactly equal to K. This is to find that the difference between the two numbers in the array is exactly

One classic method for composing secret messages is called a square code. the spaces are removed from the English text and the characters are written into a square (or rectangle ). the width and height of the rectangle have the constraint, Floor

First I was stuck at what represent state of ' Add all except I '. But after checking editorial, it's simply inverted Coin change problem.#include #include#include#include#includeusing namespacestd;#defineMOD 1000000007#defineMax_val 2000intMain () {

A trickier Dijkstra.#include #include#include#includestring>#include#include#include#include#includeusing namespacestd;Const intINF = std::numeric_limitsint>:: Max (); typedef pairint,int> Node;//index-diststructcomp{int operator() (ConstNode

Origin of 1,t test and F-Test In general, in order to determine the probability of making a mistake from the statistical results of samples (sample), we use statistical methods developed by statisticians to perform statistical verification. By comparing the obtained statistical calibration values with the probability distributions of some random variables established by statisticians (probability distribut

In Haskell. Points:1. Pruning 2. Int suffers from overflow. Integer it is.Getpowersum:: integer-(integer)--Integergetpowersum _ [] _ =0getpowersum TGT cand start = case Compare TGT start ofEQ-1LT-0GT- LetNewcand = Filter (>start) candinch

Actually I think problem statement is somewhat misleading. No need to mention range [L, R] @ all.The intention is a variation to "largest Rectangle" which are a classic stack problem on Leetcode.But you need to run largest Rectangle twice:increased

XOR-0 is the key (make it even pair): http://www.cnblogs.com/lautsie/p/3908006.htmlSomething to learn about basic Game theory:http://www.cdf.toronto.edu/~ajr/270/probsess/03/strategy.htmlYou can see, it's all on state (bit) toggling.#include

Same as Lintcode "Sliding window Median", but requires + care on details-no trailing zeroes.#include #includeSet>#include#include#include#include#include#include#include#include#include#include#include#include#include#include#includeusing

1.You is given a table, Projects, containing three columns: task_id, start_date and End_da Te. It is guaranteed that the difference between the end_date and the start_date are equal to 1 Day For each row in the table.If the end_date of the tasks is

Question connection: Sherlock and minimax Watson gives Sherlock an arrayA1, a2....He asks him to find an integerMBetweenPAndQ(BOTH aggressive), such that,Min {| ai-M |, 1 ≤ I ≤ n}Is maximized. If there are multiple solutions, print the smallest one.

In this challenge you need to print the data that accompanies each integer in a list. in addition, if two strings have the same integers, You need to print the strings in their original order. hence, your Sorting Algorithm shocould beStable, I. e.

Question connection: Game of Rotation Mark is an undergraduate student and he is interested in rotation. a conveyor belt competition is going on in the town which mark wants to win. in the competition, there's a conveyor belt which can be

Animesh hasNEmpty candy jars, numbered from 1N, With infinite capacity. He performsMOperations. Each operation is described by 3 IntegersA, BAndK. Here,AAndBAre index of the jars, andKIs the number of candies to be added inside each jar whose index

In the quicksort challenges, you sorted an entire array. sometimes, you just need specific information about a list of numbers, and doing a full sort wocould be unnecessary. can you figure out a way to use your partition code to find the median in

Sorting is often useful as the first step in your different tasks. The most common task is to make finding things easier, but there are other uses also. Challenge Given a list of unsorted numbers, can you find the numbers that have the smallest

Numeros, the artist, had two listsAAndB, Such that,BWas a permutationA. Numeros was very proud of these lists. Unfortunately, while transporting them from one exhibition to another, some numbers from ListAGot left out. Can you find out the numbers