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wrote:

🐉 show code

let N=6,D0=[0,1,0,-1],D1=[1,0,-1,0],s=[],g={},d=x=y=xa=xb=ya=yb=0;
for(let n=0;n<N;n++){s=s.concat([1]).concat(s.map(x=>!x).reverse())}
for(let i=0;i<s.length;i++) {
  x<xa && (xa=x);y<ya && (ya=y);x>xb && (xb=x);y>yb && (yb=y);
  let t=s[i]?1:-1,e=(d+t+4)%4;
  g[x]||(g[x]={});
  g[x][y]=g[x][y]?"┼":"┌┐└┘"[(t*(D0[d]+D0[e])>0?0:2)+(t*(D1[d]+D1[e])>0?0:1)];
  x+=D0[e];y+=D1[e];d=e;
}
for(j=yb;j>=ya;j--) {
  let u=""; for(i=xa;i<=xb;i++){u+=(g[i][j]||"·")} console.log(u);
}

·┌┐┌┐·······
┌┘└┼┘····┌┐·
└··└┐┌┐···└┐
···┌┼┼┘···┌┘
···└┼┼┐┌┐┌┼┐
···┌┼┘└┼┼┘└┘
···└┼┐·└┼┐··
····└┘··└┘··

continued:

OK, so you only get 10 lines of output. (I tried to get ChatGPT to write this program but it kept messing up, so I wrote it by hand.)

wrote:

mornin' i can't believe i slept like 15 hours.

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