[프로그래머스 - Lv. 2] 행렬의 곱셈

jungmyunggi/Multiplication Of Matrices.js

@@ -0,0 +1,34 @@
+arr1 = [
+    [2, 3, 2],
+    [4, 2, 4],
+    [3, 1, 4],
+];
+arr2 = [
+    [5, 4, 3],
+    [2, 4, 1],
+    [3, 1, 1],
+];
+
+function solution(arr1, arr2) {
+    var answer = [[]];
+    const r1 = arr1.length;
+    const c1 = arr1[0].length;
+    const r2 = arr2.length;
+    const c2 = arr2[0].length;
+    const temp = [];
+    for (let i = 0; i < r1; i++) {
+        temp.push(new Array(c2).fill(0));
+    }
+
+    for (let i = 0; i < r1; i++) {
+        for (let j = 0; j < c2; j++) {
+            for (let k = 0; k < c1; k++) {
+                temp[i][j] += arr1[i][k] * arr2[k][j];
+            }
+        }
+    }
+    answer = [...temp];
+    return answer;
+}
+
+console.log(solution(arr1, arr2));