一些小题<代码>

1.用传统方法计算一个数的二进制

1.只能计算小于2**16的数字

i = 17
num_2 = int(input("输入一个数字：").strip())
while True:
    i -= 1
    if i < 0:
        break
    if 2 ** i > num_2:
        print(0,end="")
    else:
        print(1,end="")
        num_2 = num_2 - 2 ** i

2.用平常数学方法解

num_2 = int(input("输入一个数字：").strip())
l = []
while True:
    b = num_2 // 2
    a = num_2 % 2
    num_2 = b
    l.append(a)
    if b == 0:
        break
l.reverse()
for i in l:
    print(i,end="")

2.用特殊字符输出一个指定高和底的空心长方形

gao = int(input("输入高：").strip())
di = int(input("输入底").strip())
count1 = 1
while count1 <= gao:
    count2 = 0
    while count2 <= di:
        count2 += 1
        if 2 <= count1 < gao and 2 <= count2 <= di:
            print(" ",end="")
            continue
        print("#",end="")
    print()
    count1 +=1

结果：

3.用特殊字符实现LED灯效果

a = "  ********"
b = "  *       "
c = "         *"
d = "  *      *"
num = [
    [a,d,d,d,d,d,a],
    [c,c,c,c,c,c,c],
    [a,c,c,a,b,b,a],
    [a,c,c,a,c,c,a],
    [d,d,d,a,c,c,c],
    [a,b,b,a,c,c,a],
    [a,b,b,a,d,d,a],
    [a,c,c,c,c,c,c],
    [a,d,d,a,d,d,a],
    [a,d,d,a,c,c,c]
]
int1 = input("输入数字:")
for i in range(7):
    for j in int1:
        print(num[int(j)][i], end="  ")
    print()

结果：