mergeTwoArraysWithoutNewArrays.js

Author: amit265

javascript/4_array-programs/mergeTwoArraysWithoutNewArrays.js

@@ -0,0 +1,46 @@
+// 40. Merge Two Arrays Without Creating a New Array
+
+{
+  let array1 = [1, 2, 3];
+  let array2 = [4, 5, 6];
+
+  array1.push(...array2);
+
+  console.log(array1);
+}
+
+// Using Array concat() Method
+
+{
+  let array1 = [1, 2, 3];
+  let array2 = [4, 5, 6];
+
+  // Store the merged array to first array
+  array1 = array1.concat(array2);
+
+  console.log(array1);
+}
+
+// Using Array splice() Method
+
+{
+  let array1 = [1, 2, 3];
+  let array2 = [4, 5, 6];
+
+  array1.splice(array1.length, 0, ...array2);
+
+  console.log(array1);
+}
+
+// Using a for Loop
+
+{
+  let array1 = [1, 2, 3];
+  let array2 = [4, 5, 6];
+
+  for (let i = 0; i < array2.length; i++) {
+    array1.push(array2[i]);
+  }
+
+  console.log(array1);
+}