New: Remove duplicate value.

Author: mbrsagor

basic/remove_duplicate_val.js

@@ -0,0 +1,23 @@
+const arrayWithDuplicates = [1, 2, 3, 4, 2, 3, 5, 6, 1];
+const uniqueArray = [...new Set(arrayWithDuplicates)];
+
+console.log(uniqueArray); // Output: [1, 2, 3, 4, 5, 6]
+
+// Using filter and indexOf:
+const arrayWithDuplicates = [1, 2, 3, 4, 2, 3, 5, 6, 1];
+const uniqueArray = arrayWithDuplicates.filter((value, index, self) => self.indexOf(value) === index);
+
+console.log(uniqueArray); // Output: [1, 2, 3, 4, 5, 6]
+
+//Using reduce:
+
+const arrayWithDuplicates = [1, 2, 3, 4, 2, 3, 5, 6, 1];
+const uniqueArray = arrayWithDuplicates.reduce((accumulator, currentValue) => {
+  if (!accumulator.includes(currentValue)) {
+    accumulator.push(currentValue);
+  }
+  return accumulator;
+}, []);
+
+console.log(uniqueArray); // Output: [1, 2, 3, 4, 5, 6]
+