hackerrank vs leetcode

Insertion sort is a simple sorting technique which was covered in previous challenges. sometimes, arrays may be too large for us to wait around for insertion sort to finish. is there some other way we can calculate the number of times insertion sort

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

The utopian tree goes through 2 cycles of growth every year. the first growth cycle of the tree occurs during the monsoon, when it doubles in height. the second growth cycle of the tree occurs during the summer, when its height increases by 1

Change language: Alex is attending a Halloween party with his girlfriend Silvia. at the party, Silvia spots a giant chocolate bar. if the chocolate can be served as only 1x1 sized pieces and Alex can cut the chocolate bar exactlyKTimes, what is the

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

Find digits Problem Statement Given a number you have to print how many digits in that number exactly divides that number. Input Format The first line contains t (number of test cases followed by T lines each containing N Constraints 1 0 Output

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

Question Link Median Dynamic Max score: 67 The medianMNumbers is defined as the middle number after sorting them in order ifMIs odd or the average number of the middle 2 numbers (again after sorting) IfMIs even. You have an emptyNumber list at

Leetcode: remove_element, leetcode I. Question Given an array and a value, delete the elements equal to the given value. Returns the length of the new array. Ii. Analysis At the beginning, I thought I only needed to return the final array length! After WA, we realized that we had to construct the array of hearts. Therefore, we can scan the array to save unequal values and delete equal values. The elements s

LeetCode summary, leetcodeBit operations have always been a required topic for programming and interviews. However, there are not many bit operations in the interview. The main reason is that bit operations are too skillful. In many cases, it is difficult to come up with bit operations in a short time, therefore, it takes a little time to answer questions for the interview. In LeetCode, there are the follow

LeetCode summary, leetcodeThe sum of trees is a common topic in the tree. There can be several variants with high flexibility and understanding of the data structure and recursion of the tree. In general, these questions do not need to consider non-recursive solutions (although the truth is the same as the LeetCode Summary-tree traversal, as long as you master it, it should be OK ). In

[LeetCode]-002-Add Two Numbers, leetcode-002-add Web: https://leetcode.com/problems/add-two-numbers/ Question: Can be used for addition of large numbers, The values start from the low position and end to end. If the value is greater than or equal to 10, the values are carried. Tip: (1) l1 is null or l2 is null (2) l1 is longer than l2 or l2 is longer than l1 (3) The highest bit in l1 and l2 is still

Leetcode: Binary_Tree_Level_Order_Traversal_II, leetcode I. Question Given a binary tree, return the value of its node through hierarchical traversal from the bottom up. (That is, from left to right, layer by layer from the leaves to the root directory ). Example: 3 output: [15, 7], /\ [9, 20] 9 20 [3] /\] 15 7 Ii. Analysis When you see the question, you first think of layered traversal. Each layer is saved

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