Added Remove Duplicates in Kotlin (#534) (#548)

Signed-off-by: nitishanand99 <nitish.anand99@gmail.com>

Programming/Kotlin/RemoveDuplicates/RemoveDuplicates.kt

@@ -0,0 +1,42 @@
+package com.example.testapp
+
+import java.util.*
+import kotlin.collections.ArrayList
+
+fun main(){
+    val scanner = Scanner(System.`in`)
+    println("Enter the size of array")
+    val size = scanner.nextInt()
+
+    val nums = arrayListOf<Int>()
+    println("Enter the $size numbers")
+    for(i in 0 until size) nums.add(scanner.nextInt())
+
+    val k = removeDuplicates(nums)
+
+    println("Size of the new array is $k")
+    print("The new array is:\n[")
+    for(num in nums){
+        if (num==nums[nums.size-1]) print("$num]")
+        else print("$num,")
+    }
+
+}
+
+fun removeDuplicates(nums : ArrayList<Int>): Int{
+    var size = nums.size
+    var i = 0
+    while (i<size){
+        innerLoop@
+        for(j in i+1 until size){
+            if (nums[i] == nums[j]){
+                nums.removeAt(i)
+                size = nums.size
+                i--
+                break@innerLoop
+            }
+        }
+        i++
+    }
+    return nums.size
+}