feat: 문제풀이 추가

Author: JEONGHWANMIN

find-minimum-in-rotated-sorted-array/hwanmini.js

@@ -0,0 +1,32 @@
+// 시간복잡도: O(log n)
+// 공간복잡도: O(1)
+
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var findMin = function(nums) {
+    let leftIdx = 0;
+    let rightIdx = nums.length - 1;
+
+    if (nums.length === 1) return nums[0]
+
+    while (leftIdx <= rightIdx) {
+        if (nums[leftIdx] < nums[rightIdx]) return nums[leftIdx]
+
+        let midIdx = Math.floor((leftIdx + rightIdx) / 2);
+
+        if (nums[midIdx] > nums[midIdx+1]) {
+            return nums[midIdx+1]
+        }
+
+        if (nums[leftIdx] < nums[midIdx] && nums[leftIdx] > nums[rightIdx]) {
+            leftIdx = midIdx
+        } else {
+            rightIdx = midIdx
+        }
+    }
+
+    return nums[0]
+};
+