Python 程序用于统计 1 至 n 所有数字中的总置位计数。
给定一个正整数 n,然后将其更改为二进制表示并统计已设置位总数。
示例
Input : n=3 Output : 4
算法
Step 1: Input a positive integer data. Step 2: then convert it to binary form. Step 3: initialize the variable s = 0. Step 4: traverse every element and add. Step 5: display sum.
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示例代码
# Python program to count set bits # in all numbers from 1 to n. def countbits(n): # initialize the counter c = 0 for i in range(1, n + 1): c += bitsetcount(i) return c def bitsetcount(x): if (x <= 0): return 0 return (0 if int(x % 2) == 0 else 1) + bitsetcount(int(x / 2)) # Driver program n = int(input("Enter the value of n")) print("Total set bit count is", countbits(n))
输出
Enter the value of n10 Total set bit count is 17
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