removeduplicateelement

Author: nilajcoder

Programs/Array/removedup.js

@@ -0,0 +1,45 @@
+
+/*
+
+WAP in Js Remove duplicate element in present array
+
+
+What happens here:
+new Set(arr)
+
+The Set is a built-in JavaScript object that stores unique values only.
+
+When you pass arr to Set, it automatically removes all duplicate elements.
+
+Example: new Set(arr) → {1, 2, 3, 4, 5, 6, 8} (this is a Set object, not an array)
+
+[... ] — Spread Operator
+
+The spread operator ... is used to spread elements of an iterable (like a Set) into an array.
+
+So [...new Set(arr)] converts the Set back into a regular array.
+
+Final result:
+uniqueArr becomes [1, 2, 3, 4, 5, 6, 8]
+
+
+let arr = [1, 1, 1, 2, 2, 2, 3, 4, 5, 6, 5, 6, 8];
+let uniqueArr = [];
+
+for (let i = 0; i < arr.length; i++) {
+  if (!uniqueArr.includes(arr[i])) {
+    uniqueArr.push(arr[i]);
+  }
+}
+
+console.log(uniqueArr);  // [1, 2, 3, 4, 5, 6, 8]
+
+
+
+*/
+
+
+let arr=[1,1,1,2,2,2,3,4,5,6,5,6,8]
+let uniqueArr = [...new Set(arr)];
+console.log(uniqueArr);  // [1, 2, 3, 4, 5, 6, 8]
+