save project

binary_search.py

-# 使用二分查找法，找出9和20在列表里面的索引
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
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+num = 20
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+low=0
+high = len(num_list) - 1
+while low <= high:
+    mid = (low+high) // 2
+    guess_nume = num_list[mid]
+    if guess_nume == num:
+        print("它的素影是:",mid)
+        break
+    elif guess_nume < num:
+        low = mid + 1
+    elif guess_nume > num:
+        high = mid-1
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