Time: 25 ms (80.61%), Space: 26.8 MB (43.99%) - LeetHub

2026-06-13 03:27:07 +00:00 · 2023-02-01 19:37:58 -05:00
parent a19cd24400
commit ec48d48322
1 changed files with 24 additions and 0 deletions
@@ -0,0 +1,24 @@
+public class Solution {
+    const int INT_MAX = 2147483647;
+    public int ReverseHelper(int x, int reversed) {
+        if (reversed > (int) (INT_MAX / 10)) {
+            return 0;
+        }
+        
+        if (x < 10) {
+            return reversed * 10 + x;
+        }
+        
+        return ReverseHelper(x / 10, reversed * 10 + x % 10);
+    }
+    
+    public int Reverse(int x) {
+        if (x == - INT_MAX - 1) {
+            return 0;
+        }
+        else if (x < 0) {
+            return -1 * ReverseHelper(Math.Abs(x), 0);
+        }
+        return ReverseHelper(Math.Abs(x), 0);
+    }
+}