convert array of numbers to array of words

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I'm trying to convert array of numbers to array of words for example:

{1,2} will converted to {"one","two"}

so this is the code that I write in java:

public static void main(String[] args) {

    ArrayList<Integer> list1 = new ArrayList<>(Arrays.asList(1,2));

    Integer [] list1Array = list1.toArray(new Integer[0]);
    int numLength2 = list1.size();
    for(int i = 0; i < numLength2; i++){
        System.out.println(list1Array[i]);
     }   
    System.out.println(numLength2);
    String n2 = ""; 
    for(int j = 0; j < numLength2; j++) {
       int element = list1.get(j);
       System.out.println(element);
       switch (element) {
              case '1': {  
                    n2 = n2 + "one";
                    break;
                }
              case '2': { 
                    n2 = n2 + "two";
                    break;
                }

                default: {
                    n2 = n2 + "zero";
                }
            }
        }
        System.out.println(n2);
    }
}

It works fine except the last print:

 System.out.println(n2);

The output here is zerozero while it should be onetwo. What's problem with code?

element is an int, but you're comparing it to a char literal. You should use int literals instead:

switch (element) {

    case 1: {  
        n2 = n2 + "one";

        break;
    }
    case 2: { 
        n2 = n2 + "two";
        break;
    }

    default: {
        n2 = n2 + "zero";
    }
}

Day 5 -- Arrays, Conditionals, and Loops, My 2 cents for golfers: b="1,2,3,4".split`,`.map(x=>+x). backquote is string litteral so we can omit the parenthesis (because of the nature of split function) but it is  Write an efficient program to convert number to words. For example, Input: 21522329901 . Output: Twenty One Billion, Fifty Two Crore, Twenty Three Lakh, Twenty Nine Thousand Nine Hundred and One Input: 14632. Output: Fourteen Thousand Six Hundred and Thirty Two Below diagram shows place value chart for any 12 digit positive integer –

case '1' , '1' is char type but element is int

Convert List to Array in Java, How do I turn a string of numbers into an array? Write code to convert a given number into words. For example, if “1234” is given as input, output should be “one thousand two hundred thirty four”. Following is the implementation for the same. The code supports numbers up-to 4 digits, i.e., numbers from 0 to 9999. Idea is to create arrays that store individual parts of output strings.

Also, if you change this line and the program will work:

int element = '0' + list1.get(j);

Java: Use Arrays with Two Dimensions or More, or “4”+5. There are several ways to convert a String into a Number: Assuming you have an array of strings, which their content is a number:  In this article you will learn to convert numbers to its words representation either with a library or using a single function. A. Use a library. To convert numbers to words with Javascript, we are going to use the numberToWords package. This module contains some util methods for converting numbers into words, ordinal words and ordinal numbers.

You could have achieved same through these few lines of codes instead of your forloop and switch.

public static void main(String[] args) {
    List<Integer> list1 = new ArrayList<>(Arrays.asList(1, 2, 5, 4));
    String[] numArray = { "zero", "one", "two", "three", "four", "five" };

    for (Integer num : list1) {
        System.out.print(numArray[num]);
    }
}

This prints,

onetwofivefour

Now as you said you want to create a list like {"one", "two"}, you can do something like this,

public static void main(String[] args) {
    List<Integer> list1 = new ArrayList<>(Arrays.asList(1, 2, 5, 4));
    String[] numArray = { "zero", "one", "two", "three", "four", "five" };
    List<String> wordList = new LinkedList<String>();

    for (Integer num : list1) {
        wordList.add(numArray[num]);
    }
    System.out.println(wordList); // prints [one, two, five, four]
}

import java. util. Arrays; { // Program to convert int array to String array in Java. public static void main(String[] args) { int[] intArray = { 1, 2, 3, 4 ,5 }; String str = Arrays. toString(intArray) // [1, 2, 3, 4, 5] . String strArray[] = str. substring(1, str. length() - 1) // 1,2,3,4,5. System. out. Keeping all these in minds, following loop will find the right index and then from the words library (fields array that we talked about earlier) we convert the digits to word. Primary method for number to English word conversion. Converting to English method is kind of straight forward compared to other methods.

Convert Strings That Represent Numbers. View MATLAB Command. Create a string array in  Array, string. The join method combines elements of an array together into a new string. This is an ideal way to convert an array into a string. Here: We take an array of three characters, use join, and then have the string "abc." Join: The join method can add separator characters in between the elements of the array. String Join

JavaScript: Split a string and convert it into an array of words Next: Write a JavaScript function to extract a specified number of characters from  To convert a string to an array that contains one item for each letter, you can use an array formula based on the MID, ROW, LEN and INDIRECT functions. This can sometimes be useful inside other formulas that manipulate text at the character level. Note: this is an array formula and must be entered with control + shift + enter.

Solved: How do I convert an array of strings (that are numbers) to an array of numbers so I can find the maximum value? I've tried using the  I've written this code to convert an integer number into its word representation. I've tested it for many cases and it seems to be working as expected. For example: 1000 displayed as "One Thousand"

Comments
  • @GNDevs If this solved your issue, please do consider selecting it as the Accepted Answer.
  • I will but there is a note says that I should wait 3 minutes until I can accept the answer @Mike Bruesch
  • @Mureinik sorry but in the question I said that I tried to convert numbers array to words array too and the result now is string so can I make the it array like{"one","two"}?