How to resolve the algorithm Knuth shuffle step by step in the Quackery programming language
Published on 12 May 2024 09:40 PM
How to resolve the algorithm Knuth shuffle step by step in the Quackery programming language
Table of Contents
Problem Statement
The Knuth shuffle (a.k.a. the Fisher-Yates shuffle) is an algorithm for randomly shuffling the elements of an array.
Implement the Knuth shuffle for an integer array (or, if possible, an array of any type).
Given an array items with indices ranging from 0 to last, the algorithm can be defined as follows (pseudo-code):
(These are listed here just for your convenience; no need to demonstrate them on the page.)
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Knuth shuffle step by step in the Quackery programming language
Source code in the quackery programming language
[ [] swap dup size times
[ dup size random pluck
nested rot join swap ]
drop ] is shuffle ( [ --> [ )
[ temp put
2dup swap
temp share swap peek
temp share rot peek
dip
[ swap
temp take
swap poke
temp put ]
swap
temp take
swap poke ] is [exch] ( n n [ --> [ )
[ dup size 1 - times
[ i 1+ dup 1+ random
rot [exch] ] ] is knuffle ( [ --> [ )
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