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一些小题

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

 1 i = 17 2 num_2 = int(input("输入一个数字:").strip()) 3 while True: 4     i -= 1 5     if i < 0: 6         break 7     if 2 ** i > num_2: 8         print(0,end="") 9     else:10         print(1,end="")11         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:        breakl.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

 1 gao = int(input("输入高:").strip()) 2 di = int(input("输入底").strip()) 3 count1 = 1 4 while count1 <= gao: 5     count2 = 0 6     while count2 <= di: 7         count2 += 1 8         if 2 <= count1 < gao and 2 <= count2 <= di: 9             print(" ",end="")10             continue11         print("#",end="")12     print()13     count1 +=1

结果:

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3.用特殊字符实现LED灯效果

 1  1 a = "  ********" 2  2 b = "  *       " 3  3 c = "         *" 4  4 d = "  *      *" 5  5 num = [ 6  6     [a,d,d,d,d,d,a], 7  7     [c,c,c,c,c,c,c], 8  8     [a,c,c,a,b,b,a], 9  9     [a,c,c,a,c,c,a],10 10     [d,d,d,a,c,c,c],11 11     [a,b,b,a,c,c,a],12 12     [a,b,b,a,d,d,a],13 13     [a,c,c,c,c,c,c],14 14     [a,d,d,a,d,d,a],15 15     [a,d,d,a,c,c,c]16 16 ]17 17 int1 = input("输入数字:")18 18 for i in range(7):19 19     for j in int1:20 20         print(num[int(j)][i], end="  ")21 21     print()

结果:

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一些小题