Python 程序如何反转一个正整数的二进制位?
首先使用 bin() 函数将数字转换为二进制。然后跳过二进制表示的前两个字符,因为 bin() 会将一个数字的二进制表示中作为前缀添加 0b,并反转剩余部分。同时从右向左从倒数第二个字符开始逐个字符进行反转。将反转后的二进制字符串转换为整数。
算法
integernumber(n,bit_size) /* n is the number and bit_size is the bitsize */ Step 1: first convert number into binary . Step 2: skip the first two characters of binary representation string and reverse. Step 3: remaining string and then append 0’s after it. Step 4: from the last character and reverse it until second last character from the left. Step 5: converts reversed binary string into an integer.
示例代码
# Python Program reverse bits of positive integer number defintegernumber(n,bit_size): bin_number = bin(n) reverse_number = bin_number[-1:1:-1] reverse_number = reverse_number + (bit_size - len(reverse_number))*'0' print ("Reverse Bits ::>",int(reverse_number,2)) # Driver program if __name__ == "__main__": n = int(input("Enter Number ::>")) bit_size = int(input("Enter Bit Size ::>")) integernumber(n,bit_size)
输出
Enter Number ::>1 Enter Bit Size ::>32 Reverse Bits ::> 2147483648 Enter Number ::>2147483648 Enter Bit Size ::>32 Reverse Bits ::> 1
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