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]
\ No newline at end of file
+b=8
+nlist = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+l=0
+h=len(nlist)-1
+
+while l<=h:
+    m=(l+h)//
+    g=nlist[m]
+    if g == b:
+        print("找到了,索引值是",m)
+        break
+    elif g < b:
+        l=m+1
+    elifg>b:
+        h=m-1       
+
+
+
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