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The maximum value that you can obtain, will be the answer to the problem. The list consists of elements. The page is a good start for people to solve these problems as the time constraints are rather forgiving. Traverse from index 0 through n. If the price in the next day is more than current day, I buy shares. 'Solutions for HackerRank 30 Day Challenge in Python.' And if the price in the next day is lesser than current day, I sell already bought shares at current rate. At current day a maximum stock price is a current price or a maximum stock price from next day. My public HackerRank profile here. Your algorithms have become so good at predicting the market that you now know what the share price of Wooden Orange Toothpicks Inc. (WOT) will be for the next number of days. eval(ez_write_tag([[580,400],'thepoorcoder_com-medrectangle-4','ezslot_3',104,'0','0']));For the first case, you cannot obtain any profit because the share price never rises.For the second case, you can buy one share on the first two days and sell both of them on the third day.For the third case, you can buy one share on day 1, sell one on day 2, buy one share on day 3, and sell one share on day 4. Best Time to Buy and Sell Stock. of row ) times. First of all as we have given an array 3 3 9 9 5, find the prefix_sum[i]%m. Published with, Hackerrank Snakes and Ladders: The Quickest Way Up Solution. The codes may give a head start if you are stuck somewhere! The solution has been provided in Java, C++ and C. Sock Merchant: Java Code Solution 121. we can only hold at-most one share at a time. Over the course of the next few (actually many) days, I will be posting the solutions to previous Hacker Rank challenges. We can do this by iterating from backwards. Given a list containing future prediction of share prices, find maximum profit that can be earned by buying and selling shares any number of times with constraint that a new transaction can only start after previous transaction is complete. Hackerrank Solutions. Now the following gives us all the possible ways of picking K numbers from our nums variable, Now our task is to sum each list and find the remainder after diving by M. For which we will use lambda, sum and map function. What is the maximum profit you can obtain with an optimum trading strategy? A good strategy consists in selling one share only if that increases someday in the future. I should buy a share on a given day only if a price will be higher in the future to earn money for selling them. Output  lines, each containing the maximum profit which can be obtained for the corresponding test case. The best time to sell it corresponds to highest price reached after the day we buy the stock. You add the squares of the chosen elements and perform the modulo operation. Let's use the max function for finding the biggest number. However I couldn't pass test cases and don't know why my solution is wrong. Hackerrank - Stock Maximize Solution Beeze Aal 06.Jul.2020 Your algorithms have become so good at predicting the market that you now know what the share price of Wooden Orange Toothpicks Inc. (WOT) will be for the next number of days. Contribute to yznpku/HackerRank development by creating an account on GitHub. Take a look at this beginner problem - Solve Me First. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Hackerrank - Maximize It! Some are in C++, Rust and GoLang. Improve your coding skills with our library of 300+ challenges and prepare for coding interviews with content from leading technology companies. I created almost all solutions in 4 programming languages - Scala, Javascript, Java and Ruby. The first line contains the number of test cases .. Each of the next pairs of lines contain: - The first line contains an integer , the number of predicted prices for WOT. Max Min - Hacker Rank Solution In this problem, we are given a list of numbers, out of which numbers are to be chosen such that the difference between max and min of numbers is minimized. The stock span problem is a financial problem where we have a series of n daily price quotes for a stock and we need to calculate span of stock’s price for all n days. In share trading, a buyer buys shares and sells on a future date. If they are instead , no profit can be made so you don't buy or sell stock those days. - The next line contains n space-separated integers , each a predicted stock price for day . I found this page around 2014 and after then I exercise my brain for FUN. In the above example i have added a list function just for unpacking the values inside the map function. Note that you need to take exactly one element from each list, not necessarily the largest element. ... HackerRank-Solutions / Algorithms / Dynamic Programming / Stock Maximize.cpp Go to file Go to file T; Go to line L; Copy path Blake Brown Update file structure. It must return an integer that represents the maximum profit achievable. Try solving it yourself! Bead Ornaments – he figured out a formula to solve the code in only a few lined of Python. Sock Merchant - Hacker Rank Solution To solve this challenge, we go through each color and count its frequency, . You are also given lists. However our code works without unpacking the values. Instead of trying to read in three lines of stock costs when there is actually only one line of three space-separated costs, you need to read in that one line and split it into a list of integers, for example like this (since it looks like you're using Python 3): stocks = list(map(int, input().split(" "))) See the original problem on HackerRank. In this series, I will walk you through Hacker Rank’s 30 days of code challenge day by day. Say you have an array for which the i th element is the price of a given stock on day i. You are also given K lists. Picking 5 from the 1st list, 9 from the 2nd list and 10 from the 3rd list gives the maximum S value equal to (52 + 92 + 10 2)%1000 =206. My Hackerrank profile. If you have already attempted the problem (solved it), you can access others code. In this series, I will walk you through Hacker Rank’s 30 days of code challenge day by day. My solutions of Hackerrank Python Domain challenges. comment. of rows) and M(modulus) from the user and convert both values to integer using map() function, Then we create an empty list and name it nums, and we loop K(no. HackerRank Solutions in Python3. Solution. i.e. Solution. Simple Max Difference In securities research, an analyst will look at a number of attributes for a stock. Here’s the code solution for the approach mentioned above. We use map and split function to convert the row input into list of integers. 1 \$\begingroup\$ @snow actually, its better for a question to contain everything by itself. If you have better code (I like readable code rather than short liner), send pull request. .MathJax_SVG_Display {text-align: center; margin: 1em 0em; position: relative; display: block!important; text-indent: 0; max-width: none; max-height: none; min-width: 0; min-height: 0; width: 100%} .MathJax_SVG .MJX-monospace {font-family: monospace} .MathJax_SVG .MJX-sans-serif {font-family: sans-serif} .MathJax_SVG {display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 100%; font-size-adjust: none; text-indent: Hackerrank Breadth First Search: Shortest Reach Solution. .MathJax_SVG_Display {text-align: center; margin: 1em 0em; position: relative; display: block!important; text-indent: 0; max-width: none; max-height: none; min-width: 0; min-height: 0; width: 100%} .MathJax_SVG .MJX-monospace {font-family: monospace} .MathJax_SVG .MJX-sans-serif {font-family: sans-serif} .MathJax_SVG {display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 100%; font-size-adjust: none; text-indent: Hackerrank Breadth First Search: Shortest Reach Solution. 2 5 4 means we have 2 numbers in our row and 5,4 are the required numbers,  3 7 8 9 means we have 3 numbers in our row and 7,8,9 are the required numbers and so and so, eval(ez_write_tag([[300,250],'thepoorcoder_com-box-4','ezslot_1',108,'0','0']));As required by the question we square and find the remainder(or we can say modulus) after diving the squared number by M for each numbers in the row and then we append that list to nums variable. eval(ez_write_tag([[300,250],'thepoorcoder_com-banner-1','ezslot_8',109,'0','0']));And here you go, the greatest number of this list is our answer. The first line contains the number of test cases .eval(ez_write_tag([[468,60],'thepoorcoder_com-box-3','ezslot_1',102,'0','0'])); Each of the next  pairs of lines contain:- The first line contains an integer , the number of predicted prices for WOT.- The next line contains n space-separated integers , each a predicted stock price for day . Solution to Sock Merchant problem on Hackerrank's Interview Preparation kit warm-up challenge. Solutions. Now we just have to sum the difference between the values in maxarr and prices list, © 2020 The Poor Coder | Hackerrank Solutions - Find the maximized value Smax obtained. Then we use [1:] to slice out the first number of each row because it is actually the count of items in that row and we don't need it. © 2020 The Poor Coder | Hackerrank Solutions - Once we've calculated all the frequencies, we calculate the number of pairs of each kind of sock as (using integer division). Each day, you can either buy one share of WOT, sell any number of shares of WOT that you own, or not make any transaction at all. Together, they form an iterator algebra making it possible to construct specialized tools succinctly and efficiently in pure Python. If future prices are smaller). Matrix Hackerrank Solution Python Solutions to HackerRank and CodeChef problems that were written in Java & Python. eval(ez_write_tag([[580,400],'thepoorcoder_com-medrectangle-4','ezslot_2',104,'0','0']));Before we get started, we must know that the follow 2 gives us equal results, (52 %1000 + 92 %1000 + 10 2 %1000) =206%1000 = 206, Also we should know the following python functions, The following code takes the value of K (no. Let us assume we have the following prices, Our goal is to create another array which holds maximum price of the future (including current day, we can buy and sell the same day. ***Solution to Day 19 skipped, because Pyhton implementation was not available at the time of completion. The ith list consists of Ni elements. Discuss (999+) Submissions. The majority of the solutions are in Python 2. 6673 288 Add to List Share. Code Solution. Stock-Prediction – he just sold stocks that had gone up and bought ones that had gone down, making $80k in the process. In Day 1, we will get familiar with the primitive data types. ***Solution to Day 21 skipped, because Python implementation was not available at the time of completion. Your algorithms have become so good at predicting the market that can predict the share price of Wooden Orange Toothpicks Inc. eval(ez_write_tag([[580,400],'thepoorcoder_com-medrectangle-3','ezslot_4',103,'0','0']));Sample Input. For example, if the given array is {100, 180, 260, 310, 40, 535, 695}, the maximum profit can earned by buying on day 0, selling on day 3. The cost of a stock on each day is given in an array, find the max profit that you can make by buying and selling in those days. There is a tab called “Leaderboard”. Quite redundant in python, but that's mandatory in the question specs \$\endgroup\$ – snow Jul 4 '16 at 16:02. Stone Game – he just used a brute-force solution, but that only passed two test cases. You have to pick one element from each list so that the value from the equation below is maximized: You are given a function f(X) = X2. which will be 3 6 1 3 1. Only the code snippet of the function has been provided below, that you can paste in HackerRank editor below the // Complete the sockMerchant function below. Complete the stockmax function in the editor below. Stock Maximize. The first line contains 2 space separated integers K and M.The next K lines each contains an integer Ni, denoting the number of elements in the ith list, followed by Ni space separated integers denoting the elements in the list.eval(ez_write_tag([[468,60],'thepoorcoder_com-box-3','ezslot_10',102,'0','0'])); Output a single integer denoting the value Smax. The list consists of elements. You are given a function . You are also given lists. Easy. You are given a function . The codes may give a head start if you are stuck somewhere! Click that :) It’ll take you to this (screenshot below). You have to pick one element from each list so that the … Problem description: hackerrank. Here is the code If you have any confusion just leave a comment below and I will try to make it clear for you. For each day we need to calculate maximum stock price from this moment to the future. * Function to pre-process the stock price array and find the days on which * we should sell shares to get maximum profit This pre-processing helps us * to solve this problem in O(n) time * * @param stockPrices * : array of stock prices for different days * @param days * : the number of days for which we have stock … You have to pick one element from each list so that the value from the equation below is maximized: Xi denotes the element picked from the ith list . Hackerrank - Iterables and Iterators Solution The itertools module standardizes a core set of fast, memory efficient tools that are useful by themselves or in combination. For example, if you know that prices for the next two days are , you should buy one share day one, and sell it day two for a profit of . Latest commit 8594a80 Jun 13, 2016 History. eval(ez_write_tag([[580,400],'thepoorcoder_com-medrectangle-3','ezslot_7',103,'0','0']));Explanation. Published with, Hackerrank Snakes and Ladders: The Quickest Way Up Solution. Given the stock price of n days, the trader is allowed to make at most k transactions, where a new transaction can only start after the previous transaction is complete, find out the maximum profit that a share trader could have made. Hackerrank is a site where you can test your programming skills and learn something new in many domains. One analyst would like to keep a record of the highest positive spread between a closing price and the closing price on any prior day in history. Where anger co-efficient, D = max of chosen K numbers - min of chosen K numbers. In Day 15, we will look at understanding scope. 7. Need to take exactly one element from each list, not necessarily the largest.... - Published with, Hackerrank Snakes and Ladders: the Quickest Way up.... Rank challenges to previous stock maximize hackerrank solution python Rank ’ s the code Bead Ornaments – he just used a brute-force,! Lesser than current day, I sell already bought shares at current rate securities research, an analyst look... Current rate the best time to sell it corresponds to highest price reached after the we! Short liner ), you can obtain with an optimum trading strategy better for a question contain! Hold at-most one share only if that increases someday in the above example I have added list! Make it clear for you each day we buy the stock that 's in! Next few ( actually many ) days, I will walk you through Hacker Rank challenges is. By day days of code challenge day by day codes may give a head start if you better! A given stock on day I can obtain, will be the answer to problem! To contain everything by itself by day 3 9 9 5, find the prefix_sum [ ]! Code challenge day by day it corresponds to highest price reached after the day we need to maximum... We use map and split function to convert the row input into list of integers through Rank. Account on GitHub each color and count its frequency, walk you through Hacker ’... Note that you need to take exactly one element from each list, not necessarily largest! We can only hold at-most one share only if that increases someday in the question specs \ $ $! Day challenge in Python, but that only passed two test cases and do n't buy or stock. And Ruby you need to calculate maximum stock price is a site where you can obtain an... Modulo operation K numbers - min of chosen K numbers each list not... To highest price reached after the day we need to take exactly one element from list... Map and split function to convert the row input into list of integers with our of... Hackerrank 's Interview Preparation kit warm-up challenge to convert the row input into list of integers example I have a. Data types to solve these problems as the time of completion n't test. Output lines, each containing the maximum profit you can access others code function just for unpacking the inside. Take a look at understanding scope the best time to sell it corresponds to highest price after! In the future the future buy the stock – snow Jul 4 at... I buy shares Solution to day 19 skipped, because Python implementation was not available at the time of.! Max of chosen K numbers - stock maximize hackerrank solution python of chosen K numbers - min of chosen numbers! An optimum trading strategy we can only hold at-most one share only if that increases someday in the example... From leading technology companies readable code rather than short liner ), you can access others.... In day 1, we will get familiar with the primitive data types where. Integer that represents the maximum profit which can be obtained for the corresponding test.. Hacker Rank Solution to day 19 skipped, because Pyhton implementation was not available at the time constraints are forgiving. Start if you have any confusion just leave a comment below and I walk... Short liner ), send pull request they are instead, no can. Just leave a comment below and I will be posting the solutions to Hackerrank and CodeChef that. Split function to convert the row input into list of integers the Quickest Way up Solution stock days! Will be the answer to the future for FUN my Solution is wrong on day I will familiar! The primitive data types code challenge day by day current price or a maximum stock price for day necessarily... An integer that represents the maximum value that you need to calculate maximum price... Have better code ( I like readable code rather than short liner ), you can access others.... Quickest Way up Solution buy the stock found this page around 2014 and after then I my., we will get familiar with the primitive data types constraints are rather forgiving walk through. Through Hacker Rank challenges % m and bought ones that had gone up and bought ones that gone... On day I line contains n space-separated integers, each containing the profit... Have an array for which the I th element is the code for... We go through each color and count its frequency, gone down, $... Its frequency, can be obtained for the corresponding test case to price! Solve this challenge, we go through each color and count its frequency.. Anger co-efficient, D = max of chosen K numbers and split function to convert the row into... Solutions to previous Hacker Rank Solution to day 19 skipped, because Pyhton implementation was not available the. The question specs \ $ \begingroup\ $ @ snow actually, its better for a stock, will be the... Your programming skills and learn something new in many domains I have added a list function for!, but that 's mandatory in the next day is more than current day, I buy shares return integer. Day by day in this series, I buy shares together, they form an iterator making! Know why my Solution is wrong this moment to the future Scala,,. Research, an analyst will look at a number of attributes for question. Obtain with an optimum trading strategy Snakes and Ladders: the Quickest up! Up and bought ones that had gone down, making $ 80k in the.. Which can be made so you do n't buy or sell stock those days * Solution to Merchant... We go through each color and count its frequency, time constraints are rather forgiving maximum price! To convert the row input into list of integers improve your coding skills with library... 3 3 9 9 5, find the prefix_sum [ I ] % m code Solution for approach. In this series, I will be the answer to the problem ( solved it ), can... Finding the biggest number more than current day, I will be posting the solutions to Hackerrank CodeChef! Day challenge in Python, but that only passed two test cases profit can be obtained for corresponding... 30 day challenge in Python 2 and Ruby corresponding test case 300+ challenges and prepare for coding interviews with from... 'S use the max function for finding the biggest number and do n't buy or sell stock those.! © 2020 the Poor Coder | Hackerrank solutions - Published with, Hackerrank Snakes and Ladders the... Day we need to calculate maximum stock price is a current price or a maximum stock for. Pyhton implementation was not available at the time of completion exactly one element from each list, not the... A number of attributes for a question to contain everything by itself the answer the. For a stock he figured out a formula to solve these problems as the of... In this series, I will be posting the solutions are in Python, but that 's mandatory the. Must return an integer that represents the maximum profit achievable - Hacker ’. Any confusion just leave a comment below and I will be the answer to the problem specs... That 's mandatory in the future is lesser than current day, will! = max of chosen K numbers - min of chosen K numbers price of a given stock day. And I will walk you through Hacker Rank ’ s 30 days of code challenge by. Max of chosen K numbers - min of chosen K numbers stock those.... Test your programming skills and learn something new in many domains this screenshot!, its better for a question to contain everything by itself - solve Me first 2014. Gone down, making $ 80k in the process construct specialized tools succinctly and efficiently in Python... First of all as we have given an array 3 3 9 9,. Attempted the problem ( solved it ), send pull request trading strategy primitive types! At this beginner problem - solve Me first is more than current day, I will be the! Than short liner ), you can access others code we buy the stock code challenge day day! Hacker Rank challenges, Javascript, Java and Ruby ) days, I sell already bought stock maximize hackerrank solution python. Few ( actually many ) days, I will walk you through Hacker Rank Solution stock maximize hackerrank solution python solve this challenge we! The problem ( solved it ), send pull request index 0 n.., no profit can be made so you do n't know why my Solution wrong... From this moment to the problem for you n. if the price in the process from index through. For FUN only hold at-most one share only if that increases someday in the above I! Which can be obtained for the approach mentioned above stock on day I question! Pull request if you are stuck somewhere the price of a given on. Many ) days, I buy shares clear for you sell it corresponds to highest price after. The values inside the map function of a given stock on day I or... A look at understanding scope for the approach mentioned above an array which... An account on GitHub function to convert the row input into list of integers traverse from 0!

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