基数B中最大的N位数字

给定正整数N和基数B ，任务是找到十进制形式的基数B的最大N位数字。

例子：

Input: N = 2, B = 10 
Output: 99

Input: N = 2, B = 5 
Output: 24 

方法：
由于基数B中有B个数字，因此我们可以使用这些数字创建长度为N的B ^N个字符串。它们表示范围为0到B ^N – 1的整数
因此，在小数形式基B的最大的N-数位数目由B ⁿ的给定– 1。

下面是上述方法的实现：

C++

// C++ program for the approach
#include 
using namespace std;
 
// Function to print the largest
// N-digit numbers of base b
void findNumbers(int n, int b)
{
 
    // Find the largest N digit
    // number in base b using the
    // formula B^N - 1
    int largest = pow(b, n) - 1;
 
    // Print the largest number
    cout << largest << endl;
}
 
// Driver Code
int main()
{
    // Given Number and Base
    int N = 2, B = 5;
 
    // Function Call
    findNumbers(N, B);
 
    return 0;
}

Java

// Java program for the approach
import java.util.*;
class GFG{
     
// Function to print the largest
// N-digit numbers of base b
static void findNumbers(int n, int b)
{
 
    // Find the largest N digit
    // number in base b using the
    // formula B^N - 1
    double largest = Math.pow(b, n) - 1;
 
    // Print the largest number
    System.out.println(largest);
}
 
// Driver Code
public static void main(String []args)
{
    // Given Number and Base
    int N = 2, B = 5;
 
    // Function Call
    findNumbers(N, B);
}
}
 
// This code is contributed by Ritik Bansal

Python3

# Python3 program for the above approach
 
# Function to print the largest
# N-digit numbers of base b
def findNumbers(n, b):
     
    # Find the largest N digit
    # number in base b using the
    # formula B^N - 1
    largest = pow(b, n) - 1
 
    # Print the largest number
    print(largest)
 
# Driver Code
 
# Given number and base
N, B = 2, 5
 
# Function Call
findNumbers(N, B)
 
# This code is contributed by jrishabh99

C#

// C# program for the approach
using System;
class GFG{
     
// Function to print the largest
// N-digit numbers of base b
static void findNumbers(int n, int b)
{
 
    // Find the largest N digit
    // number in base b using the
    // formula B^N - 1
    double largest = Math.Pow(b, n) - 1;
 
    // Print the largest number
    Console.Write(largest);
}
 
// Driver Code
public static void Main(String []args)
{
    // Given Number and Base
    int N = 2, B = 5;
 
    // Function Call
    findNumbers(N, B);
}
}
 
// This code is contributed by shivanisinghss2110

Javascript

// javascript program for the approach
 
// Function to print the largest
// N-digit numbers of base b
function findNumbers( n,  b)
{
 
    // Find the largest N digit
    // number in base b using the
    // formula B^N - 1
    let largest = Math.pow(b, n) - 1;
 
    // Print the largest number
     document.write(largest);
}
 
// Driver Code
 
    // Given Number and Base
    let N = 2, B = 5;
 
    // Function Call
    findNumbers(N, B);
     
    // This code is contributed by aashish1995
 

输出：

24

时间复杂度： O(1)
辅助空间： O(1)