Create 0344-reverse-string.kt

Author: a93a

Diff for: kotlin/0344-reverse-string.kt

@@ -0,0 +1,30 @@
+/*
+* Using 2 variables for the pointers
+*/
+class Solution {
+    fun reverseString(s: CharArray): Unit {
+        var low = 0
+        var high = s.size-1
+        while(low < high){
+            val temp = s[high]
+            s[high] = s[low]
+            s[low] = temp
+            low++
+            high--
+        }
+    }
+}
+
+/*
+* Using one variable for the pointers
+*/
+class Solution {
+    fun reverseString(s: CharArray): Unit {
+        val size = s.size
+        for(i in 0 until size/2){
+            val temp = s[i]
+            s[i] = s[size-1-i]
+            s[size-1-i] = temp
+        }
+    }
+}