feat: Add solution for LeetCode problem 55

Author: WhiteHyun

jump-game/WhiteHyun.swift

@@ -0,0 +1,19 @@
+//  
+//  55. Jump Game
+//  https://leetcode.com/problems/jump-game/description/
+//  Dale-Study
+//  
+//  Created by WhiteHyun on 2024/07/20.
+//  
+
+class Solution {
+  func canJump(_ numbers: [Int]) -> Bool {
+    var goal = numbers.endIndex - 1
+
+    for index in numbers.indices.dropLast().reversed() where index + numbers[index] >= goal {
+      goal = index
+    }
+
+    return goal == 0
+  }
+}