Create 1929-concatenation-of-array.kt

Author: a93a

kotlin/1929-concatenation-of-array.kt

@@ -0,0 +1,27 @@
+/*
+* Can be generalized to repeat(x) easier
+*/
+class Solution {
+    fun getConcatenation(nums: IntArray): IntArray {
+        val ans = LinkedList<Int>()
+        repeat(2) {
+            for(num in nums)
+                ans.addLast(num)
+        }
+        return ans.toIntArray()
+    }
+}
+
+/*
+* concrete solution
+*/
+class Solution {
+    fun getConcatenation(nums: IntArray): IntArray {
+        val ans = IntArray(nums.size * 2)
+        for(i in 0..nums.lastIndex) {
+            ans[i] = nums[i]
+            ans[i + nums.size] = nums[i]
+        }
+        return ans
+    }
+}