kata: matrix addition

Author: Omriruvio

matrix-addition.js

@@ -0,0 +1,36 @@
+// kata - https://www.codewars.com/kata/526233aefd4764272800036f
+
+// Input - 2 matrices N * N sized (square)
+// Ouput - N * N matrix with the sum of the 2 matrcies
+
+const matrixAddition = (a, b) => {
+  const c = Array.from({ length: a.length }, (x) => Array.from({ length: a.length }));
+  for (let x = 0; x < a.length; x++) {
+    for (let y = 0; y < a.length; y++) {
+      c[x][y] = a[x][y] + b[x][y];
+    }
+  }
+  return c;
+};
+
+console.log(
+  matrixAddition(
+    [
+      [1, 2, 3],
+      [3, 2, 1],
+      [1, 1, 1],
+    ],
+    //      +
+    [
+      [2, 2, 1],
+      [3, 2, 3],
+      [1, 1, 3],
+    ]
+  ),
+  '\n',
+  [
+    [3, 4, 4],
+    [6, 4, 4],
+    [2, 2, 4],
+  ]
+);