[Others]Cheque.js

/*
Convert number to words
 123456
  Output: one hundred twenty three thousand four hundred fifty six

  0 to 999 999 ONLY
*/

const convert = input => {
  var ones = [
    "",
    "one",
    "two",
    "three",
    "four",
    "five",
    "six",
    "seven",
    "eight",
    "nine",
    "ten",
    "eleven",
    "twelve",
    "thirdteen",
    "fourteen",
    "fifthteen",
    "sixteen",
    "seventeen",
    "eighteen",
    "nineteen"
  ];

  var tens = [
    "",
    "",
    "twenty",
    "thirty",
    "fourty",
    "fifty",
    "sixty",
    "seventy",
    "eighty",
    "ninety"
  ];

  if (input < 20) {
    return ones[input];
  }
  //2 digits
  if (input < 100) {
    return (
      tens[Math.floor(input / 10)] +
      (input % 10 !== 0 ? " " : "") +
      ones[input % 10]
    );
  }
  //3 digits
  if (input < 1000) {
    return ones[Math.floor(input / 100)] + " Hundred " + convert(input % 100);
  }
  //4 & 5 digit
  if (input < 100000) {
    return (
      convert(Math.floor(input / 1000)) + " Thousand " + convert(input % 1000)
    );
  }

  if (input < 1000000) {
    return (
      convert(Math.floor(input / 100000)) +
      " Hundred " +
      convert(input % 100000)
    );
  }
};

var original = 999999;
console.log(convert(original));

/* IMPORTANT: Multiple classes and nested static classes are supported */

/*
 * uncomment this if you want to read input.
//imports for BufferedReader
import java.io.BufferedReader;
import java.io.InputStreamReader;

//import for Scanner and other utility classes
import java.util.*;
*/
import java.util.*;

// Warning: Printing unwanted or ill-formatted data to output will cause the test cases to fail

class TestClass {
    public static void main(String args[] ) throws Exception {
        Scanner s = new Scanner(System.in);
        String input = s.nextLine();
        boolean numeric = input.matches("-?\\d+(\\.\\d+)?");
        if(numeric){
        String ans = helper(Integer.parseInt(input));
        if(ans.length() < 1){
            System.out.println("Invalid Input");
        }
        else{
        ans = ans.substring(0,1).toUpperCase() + ans.substring(1) + " only";
        System.out.println(ans);           
        }
        }
        else{
            System.out.println("Error occurred");
        }



        
    }
    public static String helper(int input){
        
        String[] ones = {"", "one", "two", "three","four","five","six","seven", "eight",               "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};

           String[] tens = {"", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy",            "eighty", "ninety"};

            String ans = "";
           if(input < 20){
               ans = ones[input];
           }
           else if(input < 100){
               if(input % 10 == 0){
                    ans = ans + tens[input/10];
               }
                else{
                    ans = ans + tens[input/10] + " " + ones[input %10];
                }
           }
           else if(input < 1000){
               if(input %100 == 0){
                   ans = ones[input/100] + " hundred";
               }
               else{
               ans = ones[input/100] + " hundred " + "and " + helper(input %100); 
                }
           }
           else if(input < 100000){
               ans = helper(input/1000) + " thousand";
               if(input % 1000 > 99){
                   ans = ans + ", ";
                   ans = ans + helper(input %1000);
               } 
               else if( input % 1000 == 0){
                   return ans;
               }
               else{
                   ans = ans + " and " + helper(input%1000);
               }
           }
           return ans;

    }
}