给定数字“ n”,请检查它是否是一个骗局数字。
骗局编号定义为一个合成数字,其位数之和等于其不同素数的位数之和。这里可能要注意的是,1不被视为素数,因此它不包含在不同素因数的总和中。
例子 :
Input : 22
Output : A Hoax Number
Explanation : The distinct prime factors of 22
are 2 and 11. The sum of their digits are 4,
i.e 2 + 1 + 1 and sum of digits of 22 is also 4.
Input : 84
Output : A Hoax Number
Explanation : The distinct prime factors of 84
are 2, 3 and 7. The sum of their digits are 12,
i.e 2 + 3 + 4 and sum of digits of 84 is also 12.
Input : 19
Output : Not a Hoax Number
Explanation : By definition, a hoax number is
a composite number.
骗局编号的定义与史密斯编号的定义非常相似。实际上,有些骗局编号也是史密斯编号。显然,那些在素数分解中没有重复因子的骗局数字,即平方自由数也是合格的史密斯数。
执行
1)首先生成数字’n’的所有不同素数。
2)如果“ n”不是质数,请找到在步骤1中获得的因子的数字总和。
3)找到“ n”的数字总和。
4)检查在步骤2和3中获得的总和是否相等。
5)如果总和相等,则“ n”是一个骗局数字。
C++
// CPP code to check if a number is a hoax
// number or not.
#include
using namespace std;
// Function to find distinct prime factors
// of given number n
vector primeFactors(int n)
{
vector res;
if (n % 2 == 0) {
while (n % 2 == 0)
n = n / 2;
res.push_back(2);
}
// n is odd at this point, since it is no
// longer divisible by 2. So we can test
// only for the odd numbers, whether they
// are factors of n
for (int i = 3; i <= sqrt(n); i = i + 2) {
// Check if i is prime factor
if (n % i == 0) {
while (n % i == 0)
n = n / i;
res.push_back(i);
}
}
// This condition is to handle the case
// when n is a prime number greater than 2
if (n > 2)
res.push_back(n);
return res;
}
// Function to calculate sum of digits of
// distinct prime factors of given number n
// and sum of digits of number n and compare
// the sums obtained
bool isHoax(int n)
{
// Distinct prime factors of n are being
// stored in vector pf
vector pf = primeFactors(n);
// If n is a prime number, it cannot be a
// hoax number
if (pf[0] == n)
return false;
// Finding sum of digits of distinct prime
// factors of the number n
int all_pf_sum = 0;
for (int i = 0; i < pf.size(); i++) {
// Finding sum of digits in current
// prime factor pf[i].
int pf_sum;
for (pf_sum = 0; pf[i] > 0;
pf_sum += pf[i] % 10, pf[i] /= 10)
;
all_pf_sum += pf_sum;
}
// Finding sum of digits of number n
int sum_n;
for (sum_n = 0; n > 0; sum_n += n % 10,
n /= 10)
;
// Comparing the two calculated sums
return sum_n == all_pf_sum;
}
// Driver Method
int main()
{
int n = 84;
if (isHoax(n))
cout << "A Hoax Number\n";
else
cout << "Not a Hoax Number\n";
return 0;
}
Java
// Java code to check if a number is
// a hoax number or not.
import java.io.*;
import java.util.*;
public class GFG {
// Function to find distinct
// prime factors of given
// number n
static List primeFactors(int n)
{
List res = new ArrayList();
if (n % 2 == 0)
{
while (n % 2 == 0)
n = n / 2;
res.add(2);
}
// n is odd at this point,
// since it is no longer
// divisible by 2. So we
// can test only for the
// odd numbers, whether they
// are factors of n
for (int i = 3; i <= Math.sqrt(n);
i = i + 2)
{
// Check if i is prime factor
if (n % i == 0)
{
while (n % i == 0)
n = n / i;
res.add(i);
}
}
// This condition is to
// handle the case when
// n is a prime number
// greater than 2
if (n > 2)
res.add(n);
return res;
}
// Function to calculate
// sum of digits of distinct
// prime factors of given
// number n and sum of
// digits of number n and
// compare the sums obtained
static boolean isHoax(int n)
{
// Distinct prime factors
// of n are being
// stored in vector pf
List pf = primeFactors(n);
// If n is a prime number,
// it cannot be a hoax number
if (pf.get(0) == n)
return false;
// Finding sum of digits of distinct
// prime factors of the number n
int all_pf_sum = 0;
for (int i = 0; i < pf.size(); i++)
{
// Finding sum of digits in current
// prime factor pf[i].
int pf_sum;
for (pf_sum = 0; pf.get(i) > 0;
pf_sum += pf.get(i) % 10,
pf.set(i,pf.get(i) / 10));
all_pf_sum += pf_sum;
}
// Finding sum of digits of number n
int sum_n;
for (sum_n = 0; n > 0; sum_n += n % 10,
n /= 10)
;
// Comparing the two calculated sums
return sum_n == all_pf_sum;
}
// Driver Code
public static void main(String args[])
{
int n = 84;
if (isHoax(n))
System.out.print( "A Hoax Number\n");
else
System.out.print("Not a Hoax Number\n");
}
}
// This code is contributed by
// Manish Shaw (manishshaw1)
Python3
# Python3 code to check if a number is a hoax
# number or not.
import math
# Function to find distinct prime factors
# of given number n
def primeFactors(n) :
res = []
if (n % 2 == 0) :
while (n % 2 == 0) :
n = int(n / 2)
res.append(2)
# n is odd at this point, since it is no
# longer divisible by 2. So we can test
# only for the odd numbers, whether they
# are factors of n
for i in range(3,int(math.sqrt(n)),2):
# Check if i is prime factor
if (n % i == 0) :
while (n % i == 0) :
n = int(n / i)
res.append(i)
# This condition is to handle the case
# when n is a prime number greater than 2
if (n > 2) :
res.append(n)
return res
# Function to calculate sum of digits of
# distinct prime factors of given number n
# and sum of digits of number n and compare
# the sums obtained
def isHoax(n) :
# Distinct prime factors of n are being
# stored in vector pf
pf = primeFactors(n)
# If n is a prime number, it cannot be a
# hoax number
if (pf[0] == n) :
return False
# Finding sum of digits of distinct prime
# factors of the number n
all_pf_sum = 0
for i in range(0,len(pf)):
# Finding sum of digits in current
# prime factor pf[i].
pf_sum = 0
while (pf[i] > 0):
pf_sum += pf[i] % 10
pf[i] = int(pf[i] / 10)
all_pf_sum += pf_sum
# Finding sum of digits of number n
sum_n = 0;
while (n > 0):
sum_n += n % 10
n = int(n / 10)
# Comparing the two calculated sums
return sum_n == all_pf_sum
# Driver Method
n = 84;
if (isHoax(n)):
print ("A Hoax Number\n")
else:
print ("Not a Hoax Number\n")
# This code is contributed by Manish Shaw
# (manishshaw1)
C#
// C# code to check if a number is
// a hoax number or not.
using System;
using System.Collections.Generic;
class GFG {
// Function to find distinct
// prime factors of given
// number n
static List primeFactors(int n)
{
List res = new List();
if (n % 2 == 0)
{
while (n % 2 == 0)
n = n / 2;
res.Add(2);
}
// n is odd at this point,
// since it is no longer
// divisible by 2. So we
// can test only for the
// odd numbers, whether they
// are factors of n
for (int i = 3; i <= Math.Sqrt(n);
i = i + 2)
{
// Check if i is prime factor
if (n % i == 0)
{
while (n % i == 0)
n = n / i;
res.Add(i);
}
}
// This condition is to
// handle the case when
// n is a prime number
// greater than 2
if (n > 2)
res.Add(n);
return res;
}
// Function to calculate
// sum of digits of distinct
// prime factors of given
// number n and sum of
// digits of number n and
// compare the sums obtained
static bool isHoax(int n)
{
// Distinct prime factors
// of n are being
// stored in vector pf
List pf = primeFactors(n);
// If n is a prime number,
// it cannot be a hoax number
if (pf[0] == n)
return false;
// Finding sum of digits of distinct
// prime factors of the number n
int all_pf_sum = 0;
for (int i = 0; i < pf.Count; i++)
{
// Finding sum of digits in current
// prime factor pf[i].
int pf_sum;
for (pf_sum = 0; pf[i] > 0;
pf_sum += pf[i] % 10, pf[i] /= 10);
all_pf_sum += pf_sum;
}
// Finding sum of digits of number n
int sum_n;
for (sum_n = 0; n > 0; sum_n += n % 10,
n /= 10)
;
// Comparing the two calculated sums
return sum_n == all_pf_sum;
}
// Driver Code
public static void Main()
{
int n = 84;
if (isHoax(n))
Console.Write( "A Hoax Number\n");
else
Console.Write("Not a Hoax Number\n");
}
}
// This code is contributed by
// Manish Shaw (manishshaw1)
PHP
2)
array_push($res, $n);
return $res;
}
// Function to calculate sum
// of digits of distinct prime
// factors of given number n
// and sum of digits of number
// n and compare the sums obtained
function isHoax($n)
{
// Distinct prime factors
// of n are being stored
// in vector pf
$pf = primeFactors($n);
// If n is a prime number,
// it cannot be a hoax number
if ($pf[0] == $n)
return false;
// Finding sum of digits of distinct
// prime factors of the number n
$all_pf_sum = 0;
for ($i = 0; $i < count($pf); $i++)
{
// Finding sum of digits in
// current prime factor pf[i].
$pf_sum;
for ($pf_sum = 0; $pf[$i] > 0;
$pf_sum += $pf[$i] % 10,
$pf[$i] /= 10)
;
$all_pf_sum += $pf_sum;
}
// Finding sum of digits of number n
for ($sum_n = 0; $n > 0;
$sum_n += $n % 10, $n /= 10)
;
// Comparing the two calculated sums
return $sum_n == $all_pf_sum;
}
// Driver Code
$n = 84;
if (isHoax($n))
echo ("A Hoax Number\n");
else
echo ("Not a Hoax Number\n");
// This code is contributed by
// Manish Shaw(manishshaw1)
?>
输出 :
A Hoax Number