2 篇笔记 写笔记

1. #0

   Stack Overflow

   530***[email protected]

   177

   具体实现

   十进制到二进制:

   def dec2bin(num):
    l = []
    if num < 0:
    return '-' + dec2bin(abs(num))
    while True:
    num, remainder = divmod(num, 2)
    l.append(str(remainder))
    if num == 0:
    return ''.join(l[::-1])

   十进制到八进制:

   def dec2oct(num):
    l = []
    if num < 0:
    return '-' + dec2oct(abs(num))
    while True:
    num, remainder = divmod(num, 8)
    l.append(str(remainder))
    if num == 0:
    return ''.join(l[::-1])

   十进制到十六进制:

   base = [str(x) for x in range(10)] + [ chr(x) for x in range(ord('A'),ord('A')+6)]
   def dec2hex(num):
    l = []
    if num < 0:
    return '-' + dec2hex(abs(num))
    while True:
    num,rem = divmod(num, 16)
    l.append(base[rem])
    if num == 0:
    return ''.join(l[::-1])

   Stack Overflow

   530***[email protected]

   9年前 (2017年10月08日)
2. #0

   blue&white

   298***[email protected]

   74

   十进制数转化成二进制数(float)

   while True:
    number=input("请输入一个正数:(输入q退出程序)")
    if number in ['q','Q']:
    break
    elif not float(number)>0:
    print("请输入一个正数(输入q退出程序):")
    else:
    number=float(number)
    array1=[]
    array2=[]
    integer=int(number)
    floa=number-integer
    while integer!=0:
    array1.append(integer%2)
    integer=integer//2
    else:
    array1.append(0)
    array1.reverse()
    while floa>0.00001:
    array2.append(int(2*floa))
    floa=floa*2-int(floa*2)
    else:
    array2.append(0)
    array1.append(".")
    array=array1+array2
    for x in array:
    print(x,end="")
    print("\n")

   blue&white

   blue&white

   298***[email protected]

   8年前 (2018年07月13日)