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permutations 13 Years Ago by DalekThay … problems with understanding this code. The program should write all permutations of first N numbers. [CODE=c] #include <stdio.h… but the question is WHY? ...I am having problems with permutations for a while now. Permutations that are NOT of fixed length? 12 Years Ago by HelloJarvis …word) < 2) { return array($word); } $permutations = array(); $tail = substr($word, 1); foreach (…); for ($i = 0; $i <= $length; $i++) { $permutations[] = substr($permutation, 0, $i) . $word[0] . substr($permutation,… Re: Permutations that are NOT of fixed length? 12 Years Ago by LastMitch … varying string lengths. So instead of ONLY returning 7-character permutations for a 7-character word, it would return ALL… permutations of ALL lengths less than or equal to 7. Did … you! **6 letter word but wanted to output 4 letter permutations of the word** `$final = substr($permutation, 0, 4… Permutations in Vb.net 10 Years Ago by xrjf …zero, generate all the different permutations there can be. When we talk about permutations, the order of the …course. Properly speaking in mathematics, we are talking about permutations, because the order does matter. On the other … sequence is generated, requests if the generated N! permutations should be verified. All of them should be different… Re: Permutations that are NOT of fixed length? 12 Years Ago by LastMitch **@HelloJarvis** >Yes, it would list all permutations of the 7-character word "racecar" such as &….dannyherran.com/2011/06/finding-unique-array-combinations-with-php-permutations/ Here is an permutation formula to figure out the **7… Re: Permutations that are NOT of fixed length? 12 Years Ago by HelloJarvis This is not what I mean :) I already found that algorithm on the web, but I want to mimic that just with varying string lengths. So instead of ONLY returning 7-character permutations for a 7-character word, it would return ALL permutations of ALL lengths less than or equal to 7. permutations of STRING Vs First n natural numbers 17 Years Ago by rajatC … of c++... i have a doubt regarding the permutations of a given string and permutations of first N natural numbers... i have… written a program for printing all the possible permutations of first N natural numbers..in the order of their… Permutations in Python3 14 Years Ago by king_koder I tried to generate permutations by using itertools module but its not working. [CODE=python] >>>print(permutations([1,2,3],3)) <itertools.permutations object at 0xa917c5c> [/CODE] Why is it so? and how do I make it work properly? Re: Permutations that are NOT of fixed length? 12 Years Ago by LastMitch … http://www.needcodefor.com/php/php-function-to-generate-all-permutations/ In the end you still need to used an array… Re: permutations of STRING Vs First n natural numbers 17 Years Ago by Jishnu …: [QUOTE]i have a doubt regarding the permutations of a given string and permutations of first N natural numbers...[/QUOTE] But afterwards… Re: permutations of STRING Vs First n natural numbers 17 Years Ago by rajatC … have made works fine upto first 8 natural number's permutations...but when i try it for 9 or number greater… then it takes lot of time to print all the permutations...factorial 9>300000....so i wonder whta's the… Re: permutations of STRING Vs First n natural numbers 17 Years Ago by WaltP … total permutation and an integer array[n] to store different permutations of n numbers...[/quote] [I]Double[/I]s are inexact…. You can't have 2354.34 permutations. Therefore [I]double [/I]is a bad choice. [QUOTE=rajatC… Re: Permutations in Python3 14 Years Ago by slate It works properly, but maybe not as you expect it. It gives back a generator, not a list Try: [code] list(permutations(some sequence)) #or for perm in permutations(some sequence): print perm [/code] Re: Permutations in Vb.net 10 Years Ago by xrjf Here is the reason I was working with permutations: to obtain the determinant and the inverse of a matrix. … Re: Permutations in Vb.net 7 Years Ago by web_5 The permutions of **ALL** elements in a list using recursive approach by Reverend Jim is much cleaner. Would you please post a solution that can process the permutations of **N** elements taken **M** at a time. Permutations of an N element array 18 Years Ago by merck120 … on a program in C, that needs to calculate the permutations of a n integer array. The approach that I have… the subroutine calls itself x (x being the max # of permutations) number of times returning the next permutation. For example: Information… Re: permutations of STRING Vs First n natural numbers 17 Years Ago by rajatC … total permutation and an integer array[n] to store different permutations of n numbers... And [B]how will long int affect… Permutations using a Combinations Generator (Python) 18 Years Ago by vegaseat Because of their demand only nature, generators are ideal for finding the combinations of larger sequences. This code applies a Python generator to find the combinations of the sequence. Since permutations are a special case of combinations for all the items in a sequence, I have expanded the result to give the permutations of a string. Permutations of a string 13 Years Ago by afi@alvi Any ONE who can solve this problem.... "Permutations: The challenge is to find the algorithm used to create all possible permutations of a given string" Re: Permutations of an N element array 18 Years Ago by ~s.o.s~ … are [URL="http://forums.devshed.com/c-programming-42/permutations-of-n-element-array-400719.html#post1661979"]others out… Re: Permutations using a Combinations Generator (Python) 10 Years Ago by Stefan_3 import itertools s='workmen' print ["".join(map(str,x)) for x in itertools.permutations(list(s),len(s))] Permutations of a String 16 Years Ago by theausum This is the code to print the Permutations of a String. [CODE]#include<stdio.h> #include&… Permutations of a string using recursion 18 Years Ago by roverphoenix A simple program to calculate permutations of a string using recursion, I have used a malloc string of size 100 , you can change it to whatever value you want. The author is currently working at Microsoft,any questions can be directed to [email snipped] Re: Permutations of a string using recursion 14 Years Ago by challarao [QUOTE=roverphoenix;968484]A simple program to calculate permutations of a string using recursion, I have used a malloc … Permutations with recursive generator 13 Years Ago by TrustyTony … how one could use recursion together with generators for (inefficient) permutations generator. It is kind of interesting to know how one… Re: permutations 13 Years Ago by DalekThay I got it..sorry for bothering you..only thing that I don't understand is: how does function "visit" gets called after the permutation is printed...when level reaches 3 ...the if condition is correct and it prints permutation..comes back to the visit ...decrements level..and what then? Re: permutations 13 Years Ago by raptr_dflo After it prints the permutation, it decrements level, returns the k'th element of Value to 0, and returns from this call of visit() to where it was called from -- in this case back to line 23 of the previous call to visit() and it continues with the for-loop. This is the essence of recursion(): the function calls itself, presumably with different … Re: permutations 13 Years Ago by MrEARTHSHAcKER [QUOTE]function a() calls iteslf, which calls itself; when the third invocation returns, control picks back up in the second invocation; when the second invocation returns, control picks back up in the original.[/QUOTE] Yes, but the code goes like this: [CODE] if (level == N) print(Value, N); else for (int i = 0; i < N; i++) … Re: permutations 13 Years Ago by raptr_dflo [QUOTE=MrEARTHSHAcKER;1643726] So if level is equal to N already, doesn't it mean compiler will skip the part where function is being called by itself?![/QUOTE] Yes, that's exactly what it's supposed to do. level starts out as zero (well, -1, then immediately increments itself to zero), and by the time it equals N you've finished creating a … Re: Permutations Of A Number Or String 15 Years Ago by scuba-duba need a code somewhat like this set {a,t,c,i,w,s} need to find all possible permutations of length 4 out of the above 6 chars,and each of the permutations must be in alphabetical order.