How to resolve the algorithm Spiral matrix step by step in the zkl programming language
Published on 12 May 2024 09:40 PM
How to resolve the algorithm Spiral matrix step by step in the zkl programming language
Table of Contents
Problem Statement
Produce a spiral array.
A spiral array is a square arrangement of the first N2 natural numbers, where the numbers increase sequentially as you go around the edges of the array spiraling inwards.
For example, given 5, produce this array:
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Spiral matrix step by step in the zkl programming language
Source code in the zkl programming language
fcn spiralMatrix(n){
sm:=(0).pump(n,List,(0).pump(n,List,False).copy); //L(L(False,False..), L(F,F,..) ...)
drc:=Walker.cycle(T(0,1,0), T(1,0,1), T(0,-1,0), T(-1,0,1)); // deltas
len:=n; r:=0; c:=-1; z:=-1; while(len>0){ //or do(2*n-1){
dr,dc,dl:=drc.next();
do(len-=dl){ sm[r+=dr][c+=dc]=(z+=1); }
}
sm
}
foreach n in (T(5,-1,0,1,2)){
spiralMatrix(n).pump(Console.println,fcn(r){ r.apply("%4d".fmt).concat() });
println("---");
}
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