greedy

How to create maze walls in NetLogo?

由 我的未来我决定 提交于 2019-12-08 02:43:47
问题 I am trying to create a 5x5 grid with 2 exits and put some walls in it. In other words, I want to create a maze or a labyrinth. I was wondering if there is a way to make a border line thicker or change the colour of only one side of a patch. I want to put only one agent inside and let him find the exit by rewarding him with some points. (Q-learning algorithm) Does anyone have an idea? If this is not possible can you suggest comparable code please? Here is an example of what I want to create:

What's the fastest heuristic algorithm to split students into groups?

由 …衆ロ難τιáo~ 提交于 2019-12-07 07:16:31
问题 I have X number of students, where X is a multiple of 6. I now want to split up the students into groups of 6. I have a function that measures how "good" a group of 6 is (lets say it's a black box that runs in constant time for now). By splitting up the students, and then calling my function on each group to measure it's goodness, and then summing up the goodness of each group, I'm able to measure how "good" a certain set of groups is. I'm trying to create an algorithm that will group the

Coin Change : Greedy Approach

由 ☆樱花仙子☆ 提交于 2019-12-07 01:52:21
问题 The Problem is making n cents change with quarters, dimes, nickels, and pennies, and using the least total number of coins. In the particular case where the four denominations are quarters,dimes, nickels, and pennies, we have c1 = 25, c2 = 10, c3 = 5, and c4 = 1. If we have only quarters, dimes, and pennies (and no nickels) to use, the greedy algorithm would make change for 30 cents using six coins —a quarter and five pennies—whereas we could have used three coins , namely, three dimes. Given

How to create maze walls in NetLogo?

由 时光怂恿深爱的人放手 提交于 2019-12-06 12:54:44
I am trying to create a 5x5 grid with 2 exits and put some walls in it. In other words, I want to create a maze or a labyrinth. I was wondering if there is a way to make a border line thicker or change the colour of only one side of a patch. I want to put only one agent inside and let him find the exit by rewarding him with some points. (Q-learning algorithm) Does anyone have an idea? If this is not possible can you suggest comparable code please? Here is an example of what I want to create: As asked, I've posted some of my work (although it seems inefficient to have done this manually). Here

The greedy algorithm and implementation

由 南笙酒味 提交于 2019-12-06 06:48:39
问题 Hello I've just started learning greedy algorithm and I've first looked at the classic coin changing problem . I could understand the greediness (i.e., choosing locally optimal solution towards a global optimum.) in the algorithm as I am choosing the highest value of coin such that the sum+{value of chosen coin}<=total value . Then I started to solve some greedy algorithm problem in some sites. I could solve most of the problems but couldn't figure out exactly where the greediness is applied

What is “Greedy Token Parsing”?

由 情到浓时终转凉″ 提交于 2019-12-06 01:51:41
问题 What is Greedy Token Parsing in PHP? I was reading a PHP coding guide which said the following... "Always use single quoted strings unless you need variables parsed, and in cases where you do need variables parsed, use braces to prevent greedy token parsing . You may also use double-quoted strings if the string contains single quotes, so you do not have to use escape characters." Is this using curly braces around my variables some sort of security process to rule out hacking? (E.g. {$var}) Is

Regex is behaving lazy, should be greedy

由 冷暖自知 提交于 2019-12-05 17:44:05
问题 I thought that by default my Regex would exhibit the greedy behavior that I want, but it is not in the following code: Regex keywords = new Regex(@"in|int|into|internal|interface"); var targets = keywords.ToString().Split('|'); foreach (string t in targets) { Match match = keywords.Match(t); Console.WriteLine("Matched {0,-9} with {1}", t, match.Value); } Output: Matched in with in Matched int with in Matched into with in Matched internal with in Matched interface with in Now I realize that I

What's the fastest heuristic algorithm to split students into groups?

由 a 夏天 提交于 2019-12-05 13:47:16
I have X number of students, where X is a multiple of 6. I now want to split up the students into groups of 6. I have a function that measures how "good" a group of 6 is (lets say it's a black box that runs in constant time for now). By splitting up the students, and then calling my function on each group to measure it's goodness, and then summing up the goodness of each group, I'm able to measure how "good" a certain set of groups is. I'm trying to create an algorithm that will group the students in a way so that the total goodness of all the groups is maximized, and no group has an

Coin Change : Greedy Approach

由 南笙酒味 提交于 2019-12-05 08:02:52
The Problem is making n cents change with quarters, dimes, nickels, and pennies, and using the least total number of coins. In the particular case where the four denominations are quarters,dimes, nickels, and pennies, we have c1 = 25, c2 = 10, c3 = 5, and c4 = 1. If we have only quarters, dimes, and pennies (and no nickels) to use, the greedy algorithm would make change for 30 cents using six coins —a quarter and five pennies—whereas we could have used three coins , namely, three dimes. Given a set of denominations, how can we say whether greedy approach creates an optimal solution? What you

Maximum sum of the range non-overlapping intervals in a list of Intervals

由 半世苍凉 提交于 2019-12-04 13:35:11
问题 Someone asked me this question: You are given a list of intervals. You have to design an algorithm to find the sequence of non-overlapping intervals so that the sum of the range of intervals is maximum. For Example: If given intervals are: ["06:00","08:30"], ["09:00","11:00"], ["08:00","09:00"], ["09:00","11:30"], ["10:30","14:00"], ["12:00","14:00"] Range is maximized when three intervals [“06:00”, “08:30”], [“09:00”, “11:30”], [“12:00”, “14:00”], are chosen. Therefore, the answer is 420
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