Remove Element from array Solved

Author: ManiruzzamanAkash

README.md

@@ -10,4 +10,5 @@ npm test
 
 ## Array Problems Solution -
 1. [Two Sum](https://leetcode.com/problems/two-sum/) - [Solution](https://github.com/ManiruzzamanAkash/LeetCode-In-JS/blob/main/two-sum/)
-1. [Remove duplicates from sorted array]() - [Solution](https://github.com/ManiruzzamanAkash/LeetCode-In-JS/tree/main/remove-duplicates-from-sorted-array)
+1. [Remove duplicates from sorted array]() - [Solution](https://github.com/ManiruzzamanAkash/LeetCode-In-JS/tree/main/remove-duplicates-from-sorted-array)
+1. [Remove elements from array]() - [Solution](https://github.com/ManiruzzamanAkash/LeetCode-In-JS/tree/main/remove-element)

remove-duplicates-from-sorted-array/index.test.js

@@ -11,7 +11,6 @@ test("[0,0,1,1,1,2,2,3,3,4] array would result 5", () => {
 // Test with array
 const nums = [1, 1, 2, 4, 4, 5]; // Input array
 let expectedNums = [1, 2, 4, 5, 4, 5]; // The expected answer with correct length
-const expectTotalFound = 4;
 
 test("nums = [1, 1, 2, 4, 4, 5] array would result 4 with array [1, 2, 4, 5, 4, 5]", () => {
   expect(removeDuplicates(nums)).toStrictEqual(4);

remove-element/index.js

@@ -0,0 +1,21 @@
+/**
+ * Remove an element from the array.
+ *
+ * @param {number[]} nums
+ *
+ * @return {number}
+ */
+var removeElement = function(nums, val) {
+  let i = 0;
+  while (i < nums.length) {
+    if (nums[i] === val) {
+      nums.splice(i, 1);
+    } else {
+      ++i;
+    }
+  }
+
+  return nums.length;
+};
+
+module.exports = removeElement;

remove-element/index.test.js

@@ -0,0 +1,21 @@
+const removeElement = require("./index");
+
+test("[3,2,2,3] array and val=3 would result 2", () => {
+  expect(removeElement([2, 2], 3)).toStrictEqual(2);
+});
+
+test("[0,1,2,2,3,0,4,2] array and val=2 would result 5", () => {
+  expect(removeElement([0, 1, 2, 2, 3, 0, 4, 2], 2)).toStrictEqual(5);
+});
+
+// Test with array
+let nums = [0, 1, 2, 2, 3, 0, 4, 2]; // Input array
+const val = 2;
+let expectedNums = [0, 1, 3, 0, 4]; // The expected answer with correct length
+
+test("nums = [0, 1, 2, 2, 3, 0, 4, 2] array would result 5 with array [0, 1, 3, 0, 4]", () => {
+  expect(removeElement(nums, val)).toStrictEqual(5);
+
+  // Test also the previous array
+  expect(nums).toStrictEqual(expectedNums);
+});