save project

1.py

+import random
+alist = []
+for i in range(1,101):
+    alist.append(i)
+num = random.choice(alist)
+def binary_scarch(alist,num):
+    low = 0
+    hight = len(alist)-1
+    while low <= hight:
+        mid = (low + hight) // 2
+        guess = alist[mid]
+        if guess == num:
+            return mid
+        elif guess < num:
+            low = mid + 1
+        elif guess > num:
+            hight = mid -1
+            
\ No newline at end of file

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]
+num = 9
+low = 0
+hight = 9
+while True:
+    mid = (low+hight) // 2
+    guess = num_list[mid]
+    if guess == num:
+        print("找到了")
+        break
+    elif guess < num:
+        low = mid + 1
+    else:
+        high = mid - 1
+    
\ No newline at end of file