Matrix addition / 중급

Author: tkddbs587

tkddbs587/Array/Matrix_addition.js

@@ -0,0 +1,14 @@
+function solution(arr1, arr2) {
+  let answer = [];
+
+  for (let i = 0; i < arr1.length; i++) {
+    let newRow = [];
+
+    for (let j = 0; j < arr1[i].length; j++) {
+      newRow.push(arr1[i][j] + arr2[i][j]);
+    }
+    answer.push(newRow);
+  }
+
+  return answer;
+}

tkddbs587/Array/duplicate_count.js

@@ -0,0 +1,3 @@
+function solution(array, n) {
+  return array.filter((el) => el === n).length;
+}