Commit 07bc0e4f by BellCodeEditor

save project

parent f9138224
Showing with 17 additions and 17 deletions
# 什么都没有输出,说明不在列表里 # 什么都没有输出,说明不在列表里
bingo_num = 20      要查找的数:20 bingo_num = 20 # 要查找的数:20
num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21] num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
low = 0 low = 0
high = len(num_list)-1 high = len(num_list)-1
# 当最低价格索引,小于等于最高价格时 # 当最低价格索引,小于等于最高价格时
while low <= high:x while low <= high:
    mid = (low+high) // 2 #取中间价格的索引位置   //取整 mid = (low+high) // 2 #取中间价格的索引位置 //取整
    guess_num = num_list[mid]   # 猜测的数值 guess_num = num_list[mid] # 猜测的数值
    if guess_num == bingo_num: if guess_num == bingo_num:
        print("找到了,它在列表里的索引是:", mid) print("找到了,它在列表里的索引是:", mid)
        break break
    elif guess_num < bingo_num: elif guess_num < bingo_num:
        low = mid+1 low = mid+1
    elif guess_num > bingo_num: elif guess_num > bingo_num:
        high = mid-1 high = mid-1
\ No newline at end of file \ No newline at end of file
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