Skip to main content

Find largest number in string

Given a string which is contain set of number. Our goal is to determine the largest number which is exist in this given string. Note that inside string define all numbers are not exceed the size of number.

Here given code implementation process. 

// Java program
// Find largest number in string
class MyString
{
  //Finding the max number in given text String
  public void max_number(String str)
  {
    boolean find = false;
    //Variable which is storing the information of result
    long result = 0;
    long auxiliary = 0;
    //Loop controlling variables
    int i = 0, j = 0, k = 1;
    //Loop which is iterate given string character elements
    for (i = 0; i < str.length(); i++)
    {
      if (str.charAt(i) >= '1' && str.charAt(i) <= '9')
      {
        //When get a valid number
        find = true;
        //reset variable
        auxiliary = 0;
        k = 1;
        //When get a number so check that right side element
        //When right side is exist found number then group this pair
        for (j = i; j < str.length(); j++)
        {
          //Check valid number between 0-9
          if (str.charAt(j) >= '0' && str.charAt(j) <= '9')
          {
            //When get numbers
            auxiliary = (auxiliary * 10) + (str.charAt(j) - '0');
          }
          else
          {
            break;
          }
        }
        //move to current calculate position
        i = j;
        if (auxiliary > result)
        {
          //When get a new set of large number
          result = auxiliary;
        }
      }
    }
    System.out.print(" Given String : [" + str + "]\n Result : ");
    if (find == true)
    {
      System.out.print(result + "\n");
    }
    else
    {
      System.out.print("None\n");
    }
  }
  public static void main(String[] args)
  {
    MyString obj = new MyString();
    // Check Case
    obj.max_number("1k2h3m6b");
    obj.max_number("ihave13ideaofthis0007codes324youare");
    obj.max_number("Iam12-11-2021,check2-1233l");
  }
}

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021
// C++ program
// Find largest number in string

//Include header file
#include <iostream>

using namespace std;

class MyString
{
  public:
    //Finding the max number in given text String
    void max_number(string str)
    {
      bool find = false;
      //Variable which is storing the information of result
      long result = 0;
      long auxiliary = 0;
      //Loop controlling variables
      int i = 0, j = 0, k = 1;
      //Loop which is iterate given string character elements
      for (i = 0; i < str.size(); i++)
      {
        if (str[i] >= '1' && str[i] <= '9')
        {
          //When get a valid number
          find = true;
          //reset variable
          auxiliary = 0;
          k = 1;
          //When get a number so check that right side element
          //When right side is exist found number then group this pair
          for (j = i; j < str.size(); j++)
          {
            //Check valid number between 0-9
            if (str[j] >= '0' && str[j] <= '9')
            {
              //When get numbers
              auxiliary = (auxiliary * 10) + (str[j] - '0');
            }
            else
            {
              break;
            }
          }
          //move to current calculate position
          i = j;
          if (auxiliary > result)
          {
            //When get a new set of large number
            result = auxiliary;
          }
        }
      }
      cout << " Given String : [" << str << "]\n Result : ";
      if (find == true)
      {
        cout << result << "\n";
      }
      else
      {
        cout << "None\n";
      }
    }
};
int main()
{
  MyString obj = MyString();
  // Check Case
  obj.max_number("1k2h3m6b");
  obj.max_number("ihave13ideaofthis0007codes324youare");
  obj.max_number("Iam12-11-2021,check2-1233l");
  return 0;
}

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021
// C# program
// Find largest number in string

//Include namespace system
using System;
class MyString
{
  //Finding the max number in given text String
  public void max_number(String str)
  {
    Boolean find = false;
    //Variable which is storing the information of result
    long result = 0;
    long auxiliary = 0;
    //Loop controlling variables
    int i = 0, j = 0;
    //Loop which is iterate given string character elements
    for (i = 0; i < str.Length; i++)
    {
      if (str[i] >= '1' && str[i] <= '9')
      {
        //When get a valid number
        find = true;
        //reset variable
        auxiliary = 0;
    
        //When get a number so check that right side element
        //When right side is exist found number then group this pair
        for (j = i; j < str.Length; j++)
        {
          //Check valid number between 0-9
          if (str[j] >= '0' && str[j] <= '9')
          {
            //When get numbers
            auxiliary = (auxiliary * 10) + (str[j] - '0');
          }
          else
          {
            break;
          }
        }
        //move to current calculate position
        i = j;
        if (auxiliary > result)
        {
          //When get a new set of large number
          result = auxiliary;
        }
      }
    }
    Console.Write(" Given String : [" + str + "]\n Result : ");
    if (find == true)
    {
      Console.Write(result + "\n");
    }
    else
    {
      Console.Write("None\n");
    }
  }
  public static void Main(String[] args)
  {
    MyString obj = new MyString();
    // Check Case
    obj.max_number("1k2h3m6b");
    obj.max_number("ihave13ideaofthis0007codes324youare");
    obj.max_number("Iam12-11-2021,check2-1233l");
  }
}

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021
<?php
// Php program
// Find largest number in string
class MyString
{
  //Finding the max number in given text String
  public  function max_number($str)
  {
    $find = false;
    //Variable which is storing the information of result
    $result = 0;
    $auxiliary = 0;
    //Loop controlling variables
    $i = 0;
    $j = 0;
    //Loop which is iterate given string character elements
    for ($i = 0; $i < strlen($str); $i++)
    {
      if (ord($str[$i]) >= ord('1') && ord($str[$i]) <= ord('9'))
      {
        //When get a valid number
        $find = true;
        //reset variable
        $auxiliary = 0;
              
        //When get a number so check that right side element
        //When right side is exist found number then group this pair
        for ($j = $i; $j < strlen($str); $j++)
        {
          //Check valid number between 0-9
          if (ord($str[$j]) >= ord('0') && ord($str[$j]) <= ord('9'))
          {
            //When get numbers
            $auxiliary = ($auxiliary * 10) + (ord($str[$j]) - ord('0'));
          }
          else
          {
            break;
          }
        }
        //move to current calculate position
        $i = $j;
        if ($auxiliary > $result)
        {
          //When get a new set of large number
          $result = $auxiliary;
        }
      }
    }
    echo " Given String : [". $str ."]\n Result : ";
    if ($find == true)
    {
      echo $result ."\n";
    }
    else
    {
      echo "None\n";
    }
  }
}

function main()
{
  $obj = new MyString();
  // Check Case
  $obj->max_number("1k2h3m6b");
  $obj->max_number("ihave13ideaofthis0007codes324youare");
  $obj->max_number("Iam12-11-2021,check2-1233l");
}
main();

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021
// Node Js program
// Find largest number in string
class MyString
{
  //Finding the max number in given text String
  max_number(str)
  {
    var find = false;
    //Variable which is storing the information of result
    var result = 0;
    var auxiliary = 0;
    //Loop controlling variables
    var i = 0;
    var j = 0;
    //Loop which is iterate given string character elements
    for (i = 0; i < str.length; i++)
    {
      if (str[i] >= '1' && str[i] <= '9')
      {
        //When get a valid number
        find = true;
        //reset variable
        auxiliary = 0;
        //When get a number so check that right side element
        //When right side is exist found number then group this pair
        for (j = i; j < str.length; j++)
        {
          //Check valid number between 0-9
          if (str[j] >= '0' && str[j] <= '9')
          {
            //When get numbers
            auxiliary = (auxiliary * 10) + (str[j] - '0');
          }
          else
          {
            break;
          }
        }
        //move to current calculate position
        i = j;
        if (auxiliary > result)
        {
          //When get a new set of large number
          result = auxiliary;
        }
      }
    }
    process.stdout.write(" Given String : [" + str + "]\n Result : ");
    if (find == true)
    {
      process.stdout.write(result + "\n");
    }
    else
    {
      process.stdout.write("None\n");
    }
  }
}

function main()
{
  var obj = new MyString();
  // Check Case
  obj.max_number("1k2h3m6b");
  obj.max_number("ihave13ideaofthis0007codes324youare");
  obj.max_number("Iam12-11-2021,check2-1233l");
}
main();

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021
#  Python 3 program
#  Find largest number in string
class MyString :
  # Finding the max number in given text String
  def max_number(self, str_data) :
    find = False
    # Variable which is storing the information of result
    result = 0
    auxiliary = 0
    # Loop controlling variables
    i = 0
    j = 0
    # Loop which is iterate given string character elements
    while (i < len(str_data)) :
      if (ord(str_data[i]) >= ord('1') and (ord(str_data[i]) <= ord('9'))) :
        # When get a valid number
        find = True
        # reset variable
        auxiliary = 0
        # When get a number so check that right side element
        # When right side is exist found number then group this pair
        j = i
        while (j < len(str_data)) :
          # Check valid number between 0-9
          if (ord(str_data[j]) >= ord('0') and ord(str_data[j]) <= ord('9')) :
            # When get numbers
            auxiliary = (auxiliary * 10) + (ord(str_data[j]) - ord('0'))
          else :
            break
          
          j += 1
        
        # move to current calculate position
        i = j
        if (auxiliary > result) :
          # When get a new set of large number
          result = auxiliary
        
      
      i += 1
    
    print(" Given String : [", str_data ,"]\n Result : ", end = "")
    if (find == True) :
      print(result ,"\n", end = "")
    else :
      print("None\n", end = "")
    
  

def main() :
  obj = MyString()
  #  Check Case
  obj.max_number("1k2h3m6b")
  obj.max_number("ihave13ideaofthis0007codes324youare")
  obj.max_number("Iam12-11-2021,check2-1233l")

if __name__ == "__main__": main()

Output

 Given String : [ 1k2h3m6b ]
 Result : 6
 Given String : [ ihave13ideaofthis0007codes324youare ]
 Result : 324
 Given String : [ Iam12-11-2021,check2-1233l ]
 Result : 2021
#  Ruby program
#  Find largest number in string
class MyString

  # Finding the max number in given text String
  def max_number(str)
  
    find = false
    # Variable which is storing the information of result
    result = 0
    auxiliary = 0
    # Loop controlling variables
    i = 0
    j = 0
    # Loop which is iterate given string character elements
    while (i < str.length())
    
      if (str[i].ord >= ('1').ord && str[i].ord <= ('9').ord)
      
        # When get a valid number
        find = true
        # reset variable
        auxiliary = 0
        # When get a number so check that right side element
        # When right side is exist found number then group this pair
        j = i
        while (j < str.length())
        
          # Check valid number between 0-9
          if (str[j].ord >= ('0').ord && str[j].ord <= ('9').ord)
          
            # When get numbers
            auxiliary = (auxiliary * 10) + (str[j].ord - ('0').ord)
          else
            break
          end
          j += 1
        end
        # move to current calculate position
        i = j
        if (auxiliary > result)
        
          # When get a new set of large number
          result = auxiliary
        end
      end
      i += 1
    end
    print(" Given String : [", str ,"]\n Result : ")
    if (find == true)
    
      print(result ,"\n")
    else
    
      print("None\n")
    end
  end
end
def main()

  obj = MyString.new()
  #  Check Case
  obj.max_number("1k2h3m6b")
  obj.max_number("ihave13ideaofthis0007codes324youare")
  obj.max_number("Iam12-11-2021,check2-1233l")
end
main()

Output

 Given String : [1k2h3m6b]
 Result : 6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result : 324
 Given String : [Iam12-11-2021,check2-1233l]
 Result : 2021

import scala.util.control.Breaks._
// Scala program
// Find largest number in string
class MyString
{
  //Finding the max number in given text String
  def max_number(str: String): Unit = {
    var find: Boolean = false;
    //Variable which is storing the information of result
    var result: Long = 0;
    var auxiliary: Long = 0;
    //Loop controlling variables
    var i: Int = 0;
    var j: Int = 0;
    //Loop which is iterate given string character elements
    while (i < str.length())
    {
      if (str(i) >= '1' && str(i) <= '9')
      {
        //When get a valid number
        find = true;
        //reset variable
        auxiliary = 0;
        //When get a number so check that right side element
        //When right side is exist found number then group this pair
        j = i;
                breakable {
                  while (j < str.length())
                  {
                      //Check valid number between 0-9
                      if (str(j) >= '0' && str(j) <= '9')
                      {
                          //When get numbers
                          auxiliary = (auxiliary * 10) + (str(j) - '0');
                      }
                      else
                      {
                          break;
                      }
                      j += 1;
                  }
                }
        //move to current calculate position
        i = j;
        if (auxiliary > result)
        {
          //When get a new set of large number
          result = auxiliary;
        }
      }
      i += 1;
    }
    print(" Given String : [" + str + "]\n Result : ");
    if (find == true)
    {
      print(" "+result + "\n");
    }
    else
    {
      print("None\n");
    }
  }
}
object Main
{
  def main(args: Array[String]): Unit = {
    var obj: MyString = new MyString();
    // Check Case
    obj.max_number("1k2h3m6b");
    obj.max_number("ihave13ideaofthis0007codes324youare");
    obj.max_number("Iam12-11-2021,check2-1233l");
  }
}

Output

 Given String : [1k2h3m6b]
 Result :  6
 Given String : [ihave13ideaofthis0007codes324youare]
 Result :  324
 Given String : [Iam12-11-2021,check2-1233l]
 Result :  2021
// Swift program
// Find largest number in string
class MyString
{
    //Finding the max number in given text String
    func max_number(_ text: String)
    {
        var find: Bool = false;
        var str = Array(text);
        //Variable which is storing the information of result
        var result: Int = 0;
        var auxiliary: Int = 0;
        //Loop controlling variables
        var i: Int = 0;
        var j: Int = 0;
        let zero = Int(UnicodeScalar("0")!.value);
        let nine = Int(UnicodeScalar("9")!.value);
        //Loop which is iterate given string character elements
        while (i < str.count)
        {   
            var char_data = Int(UnicodeScalar(String(str[i]))!.value);
                
            if (char_data >= zero+1 && char_data <= nine)
            {
                //When get a valid number
                find = true;
                //reset variable
                auxiliary = 0;
                //When get a number so check that right side element
                //When right side is exist found number then group this pair
                j = i;
                
                while (j < text.count)
                {
                    char_data = Int(UnicodeScalar(String(str[j]))!.value);
                       //Check valid number between 0-9
                    if (char_data >= zero && char_data <= nine)
                    {
                        //When get numbers
                        auxiliary = (auxiliary * 10) + (char_data - zero);
                    }
                    else
                    {
                        break;
                    }
                    j += 1;
                }
                //move to current calculate position
                i = j;
                if (auxiliary > result)
                {
                    //When get a new set of large number
                    result = auxiliary;
                }
            }
            i += 1;
        }
        print(" Given String : [", text ,"]\n Result : ", terminator: "");
        if (find == true)
        {
            print(result ,"\n", terminator: "");
        }
        else
        {
            print("None\n", terminator: "");
        }
    }
}
func main()
{
    let obj: MyString = MyString();
    // Check Case
    obj.max_number("1k2h3m6b");
    obj.max_number("ihave13ideaofthis0007codes324youare");
    obj.max_number("Iam12-11-2021,check2-1233l");
}
main();

Output

 Given String : [ 1k2h3m6b ]
 Result : 6
 Given String : [ ihave13ideaofthis0007codes324youare ]
 Result : 324
 Given String : [ Iam12-11-2021,check2-1233l ]
 Result : 2021
Last updated on by Kalkicode




Comment

Please share your knowledge to improve code and content standard. Also submit your doubts, and test case. We improve by your feedback. We will try to resolve your query as soon as possible.

New Comment