华为机试刷题

记录一些小问题和例题

# 华为机试刷题 记录一些小问题

import pytest


# 对于python中的字符串输入，可以写成S=input(),也可以写成S=input('')
@pytest.mark.parametrize("data", ['a'])
def test_in1str(data):
    s = str(data)
    li = s.split(' ')
    if li is None:
        print(-1)
    else:
        print(len(li[-1]))


# 字符串转ASCII码 ord() + 判断在字符内
@pytest.mark.parametrize("data", ['123ab你cde*()我'])
def test_ASCII(data):
    s_list = []
    for i in data:
        if 0 < ord(i) < 127 and i not in s_list:
            s_list.append(i)
            print(i)


# set去重和排序 set()
@pytest.mark.parametrize("data", [[1, 3, 1, 4, 6, 8, 9, 2, 2]])
def test_set(data):
    lists = set(data)
    for i in lists:
        print(i)


# 字符串的切片和赋值 [:8]
@pytest.mark.parametrize("data", ['13245', '1324657896546', '6666'])
def test_set(data):
    li = []
    while (len(data) > 8):
        li.append(data[:8])
        data = data[8:]
    if len(data) < 8:
        num = 8 - len(data)
        sub = ''
        for i in range(num):
            sub += '0'
        li.append((data + sub))
    else:
        li.append(data)
    for i in li:
        print(i)


# 进制转换 hex() 和 eval()
@pytest.mark.parametrize("data", [6888])
def test_hex(data):
    print("\n" + hex(data))
    print(eval(hex(data)))


# 求最小质因数,要细心计算，尤其是更新变量的步骤
@pytest.mark.parametrize("data", [68880])
def test_minFactor(data):
    num = []
    i = 2
    while i <= data:
        if data % i != 0:
            i += 1
        elif data % i == 0:
            num.append(i)
            num.append(" ")
            data /= i
        elif data == 1:
            break
    for i in num:
        print(i, end="")


# 四舍五入 int()
@pytest.mark.parametrize("data", [68880.8])
def test_round(data):
    print(int(data + 0.5))


# map函数是将int类型和数值进行映射，也就是进行类型转换，对于字典按值排序问题，直接使用sorted(dict.keys())
@pytest.mark.parametrize("data", ["16888064652555"])
def test_mapSort(data):
    dict1 = {}
    for i in range(int(data)):
        key, value = map(int, str(data).split(), i)
        if key in dict1.keys():
            dict1[key] += value
        else:
            dict1[key] = value
    dict2 = sorted(dict1.keys())
    for i in dict2:
        print(i, dict1[i])


# 从右往左返回整数
@pytest.mark.parametrize("data", [1688806465255])
def test_intNum(data):
    if data != None:
        num_list = []
        data_new = str(data)[::-1]
        for i in data_new:
            if int(i) not in num_list:
                num_list.append(int(i))
        num = 0
        length = len(num_list) - 1
        for i in num_list:
            num += (i * (10 ** length))
            length -= 1
        print(num)
    else:
        print('INPUT NONE')


# 逆序输出 [::-1]
@pytest.mark.parametrize("data", [16888064650025500])
def test_inverse(data):
    if data != None:
        data_new = str(data)[::-1]
        print(data_new)
    else:
        print('INPUT NONE')


# 对于元素值都是字符串的列表一样可以排序，使用sort()函数
@pytest.mark.parametrize("data", [['16', '88', 'D', '806', 'OO', '4650025500']])
def test_SORT(data):
    data.sort();
    for i in data:
        print(i)


# 将十进制转换成二进制函数，使用bin()函数
@pytest.mark.parametrize("data", [16, 88, 806, 100, 4650025500])
def test_SORT(data):
    count = 0
    for i in bin(data):
        if i == '1':
            count += 1
    print(count)