Amidakuji

amidakuji/index.js

@@ -0,0 +1,12 @@
+// https://www.codewars.com/kata/amidakuji/javascript
+
+function amidakuji(arr) {
+  const swap = (arr, ai, bi) => [arr[ai], arr[bi]] = [arr[bi], arr[ai]];
+  const res = new Array(arr[0].length+1).fill(0).map((_,i)=>i);
+  arr.map((row, ri) => {
+    [...row].map((d, di) => {
+      d === '1' && swap(res, di, di + 1);
+    });
+  });
+  return res;
+}