save project

diy2.py

-for i in range(1,10):
-    for j in range(1,i+1):
-        print(j,"*",i,"=",(j*i),end=" ")
-    print()
+num_list = [1,3,5,8,11,15,17,18,20,21]
+num = 17
+low = 0
+high = len(num_list)-1
\ No newline at end of file
+while low <= high:
+    mid = (low + high) // 2
+    guess = num_list[mid]
+    if guess == num:
+        print("找到了,他在列表里的索引是:",mid)
+        break
+    elif guess < num:
+        low = mid + 1
+    elif guess > num:
+        high = mid - 1
+        
\ No newline at end of file