题解 | #进制转换#

将输入的16进制作为字符串进行处理。 构建字典将16进制中的字符转化为数字。

dic = {
    'A': 10,
    'B': 11,
    'C': 12,
    'D': 13,
    'E': 14,
    'F': 15,
}
while True:
    try:
        raw = list(input())
        length = len(raw)
        sum = 0
        for i in range(length-1, 1, -1):
            if raw[i] in dic:
                sum += dic[raw[i]]*16**(length-1-i)
            else:
                sum += int(raw[i])*16**(length-1-i)
        print(sum)
    except:
        break