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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+b_n = 17
+n_l = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+l = 0
+h = len(n_l)-1
+while l <= h:
+    m = (l + h) // 2
+    g_n = n_l[m]
+    if g_n == b_n:
+        print("找到了，他在列表里的索引是：",m)
+        break
+    elif g_n < b_n:
+        l = m + 1
+    elif g_n > b_n:
+        h = m - 1
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