feat: Add solution for LeetCode problem 153

Author: WhiteHyun

find-minimum-in-rotated-sorted-array/WhiteHyun.swift

@@ -0,0 +1,25 @@
+//  
+//  153. Find Minimum in Rotated Sorted Array
+//  https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/description/
+//  Dale-Study
+//  
+//  Created by WhiteHyun on 2024/06/09.
+//  
+
+class Solution {
+  func findMin(_ nums: [Int]) -> Int {
+    var left = 0
+    var right = nums.count - 1
+    while left < right {
+      let mid = (left + right) >> 1
+
+      if nums[mid] > nums[right] {
+        left = mid + 1
+      } else {
+        right = mid
+      }
+    }
+
+    return nums[left]
+  }
+}