检查一个号码是否为鸭号
原文:https://www . geesforgeks . org/check-what-number-duck-number-not/
鸭号是一个正数，其中有零，例如 3210，8050896，70709 都是鸭号。请注意，只有前导 0 的数字不被视为鸭号。例如，像 035 或 0012 这样的数字不被认为是鸭号。像 01203 这样的数字被认为是 Duck，因为其中有一个非前导 0。
示例:
输入:707069 输出:是鸭号。 说明:707069 开头不含零。
输入:02364 输出:不是鸭号。 说明:02364 中，数字的开头有一个零。
C++
// C++ Program to check whether
// a number is Duck Number or not.
#include <iostream>
using namespace std;
// Function to check whether
// given number is duck number or not.
bool check_duck(string num)
{
// Ignore leading 0s
int i = 0, n = num.length();
while (i < n && num[i] == '0')
i++;
// Check remaining digits
while (i < n) {
if (num[i] == '0')
return true;
i++;
}
return false;
}
// Driver Method
int main(void)
{
string num = "1023";
if (check_duck(num))
cout << "It is a duck number\n";
else
cout << "It is not a duck number\n";
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to check whether a
// number is Duck Number or not.
import java.io.*;
class GFG {
// Function to check whether
// the given number is duck number or not.
static boolean check_duck(String num)
{
// Ignore leading 0s
int i = 0, n = num.length();
while (i < n && num.charAt(i) == '0')
i++;
// Check remaining digits
while (i < n) {
if (num.charAt(i) == '0')
return true;
i++;
}
return false;
}
// Driver Method
public static void main(String args[]) throws IOException
{
String num = "1023";
if (check_duck(num))
System.out.println("It is a duck number");
else
System.out.println("It is not a duck number");
}
}
计算机编程语言
# Python program to check whether a number is Duck Number or not.
# Function to check whether
# the given number is duck number or not.
def check_duck(num) :
# Length of the number(number of digits)
n = len(num)
# Ignore leading 0s
i = 0
while (i < n and num[i] == '0') :
i = i + 1
# Check remaining digits
while (i < n) :
if (num[i] == "0") :
return True
i = i + 1
return False
# Driver Method
num1 = "1023"
if(check_duck(num1)) :
print "It is a duck number"
else :
print "It is not a duck number"
# Write Python3 code here
C
// C# Program to check whether a
// number is Duck Number or not.
using System;
class GFG {
// Function to check whether
// the given number is duck
// number or not.
static bool check_duck( String num)
{
// Ignore leading 0s
int i = 0, n = num.Length;
while (i < n && num[i] == '0')
i++;
// Check remaining digits
while (i < n) {
if (num[i] == '0')
return true;
i++;
}
return false;
}
// Driver Method
public static void Main()
{
String num1 = "1023";
// checking number1
if( check_duck(num1))
Console.Write("It is a "
+ "duck number");
else
Console.Write("It is not "
+ "a duck number");
}
}
// This code is contributed by
// nitin mittal.
java 描述语言
<script>
// Javascript program to check whether
// a number is Duck Number or not.
// Function to check whether
// given number is duck number or not.
function check_duck(num)
{
// Ignore leading 0s
let i = 0, n = num.length;
while (i < n && num[i] == '0')
i++;
// Check remaining digits
while (i < n)
{
if (num[i] == '0')
return true;
i++;
}
return false;
}
// Driver code
let num = "1023";
if (check_duck(num))
document.write("It is a duck number");
else
document.write("It is not a duck number");
// This code is contributed by rishavmahato348
</script>
输出:
It is a duck number.
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