Add nearestDrone method for drone distance calculation

Implement nearestDrone method to find the closest available drone based on Manhattan distance.

Author: 724thomas

leetcode3/최원준/4024. Nearest Available Drone.py

@@ -0,0 +1,29 @@
+#
+
+'''
+1. 아이디어 :
+-
+
+2. 시간복잡도 :
+    O(n)
+
+3. 자료구조/알고리즘 :
+-
+
+'''
+class Solution:
+    def nearestDrone(self, drones: list[list[int]], target: list[int]) -> int:
+        
+        def get_manhattan_distance(x1, y1, x2, y2):
+            return abs(x1-x2) + abs(y1-y2) #|xi - xj| + |yi - yj|
+
+        min_distance = float('inf')
+        ans = -1
+
+        for i in range(len(drones)):
+            x, y, distance = drones[i]
+            m_distance = get_manhattan_distance(x, y, target[0], target[1])
+            if m_distance < min_distance and m_distance<=distance:
+                min_distance = m_distance
+                ans = i
+        return ans