feat: add arrays similar solution

Author: marcode24

codewars/arrays-similar/README.md

@@ -0,0 +1,18 @@
+# Arrays Similar
+
+## Description
+
+Write a function that determines whether the passed in sequences are similar. Similar means they contain the same elements, and the same number of ocurrences of elements.
+
+```js
+var arr1 = [1, 2, 2, 3, 4],
+    arr2 = [2, 1, 2, 4, 3],
+    arr3 = [1, 2, 3, 4],
+    arr4 = [1, 2, 3, '4']
+```
+
+```js
+arraysSimilar(arr1, arr2); // should equal true
+arraysSimilar(arr2, arr3); // should equal false
+arraysSimilar(arr3, arr4); // should equal false
+```

codewars/arrays-similar/solution.js

@@ -0,0 +1,10 @@
+const arraysSimilar = (arr1, arr2) => {
+  if (arr1.length !== arr2.length) {
+    return false;
+  }
+  arr1 = arr1.sort((a, b) => a - b);
+  arr2 = arr2.sort((a, b) => a - b);
+  return arr1.every((el, index) => el === arr2[index]);
+};
+
+module.exports = arraysSimilar;

codewars/arrays-similar/solution.test.js

@@ -0,0 +1,34 @@
+const arraysSimilar = require('./solution');
+
+describe('Arrays Similar', () => {
+  const testCases = [
+    {
+      input: [[1, 2, 3, 4, 5], [2, 3, 4, 1, 5]],
+      output: true,
+    },
+    {
+      input: [[1, 2, 3, 4, 5, 6, 7, 8, 9, 0], [5, 2, 3, 4, 7, 8, 9, 1, 0, 6]],
+      output: true,
+    },
+    {
+      input: [[1, 2, 3, '4', 5], [2, 3, 4, '1', 5]],
+      output: false,
+    },
+    {
+      input: [[1, 2, 3, '3', 5], [2, 3, 4, '1', 5]],
+      output: false,
+    },
+    {
+      input: [[2, 3], [1, 2, 4]],
+      output: false,
+    },
+  ];
+
+  it('should return a boolean type', () => {
+    expect(typeof arraysSimilar([1, 2], [2, 1])).toBe('boolean');
+  });
+
+  it.each(testCases)('should return $output', (testCase) => {
+    expect(arraysSimilar(...testCase.input)).toBe(testCase.output);
+  });
+});