For each numerical value 0, 1, 2, ...9 (0 <= NUMBER <= 9), embedded in a sentenc

Question

For each numerical value 0, 1, 2, ...9 (0 <= NUMBER <= 9), embedded in a sentence, convert that value to its equivalent English text. Print the converted sentence to the screen and to an output file. Your input file consists of a variable number of records. Each record is a sentence of length <= 80 characters. More than one numerical value in the given range may appear in a sentence. You must deal with upper and lower case issues. If a line begins with a single digit, write that digit as a word starting with an uppercase letter. See the examples below. Examples: Input Record: 3 foxes were chasing 5 rabbits and 10 ducks. Output Record: Three foxes were chasing five rabbits and 10 ducks. Input Record: I used 3 eggs out of the 12 for the cake. Output Record: I used three eggs out of the 12 for the cake. Input Record: 1 picture is worth 1000 words. Output Record: One picture is worth 1000 words. Input Record: There are 260 students enrolled in Java. Output Record: There are 260 students enrolled in Java.

Explanation / Answer

Converter.java

package syemmetric;

public class Converter {

String[] CapitalMap = { "Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };

String[] smallMap = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };

StringBuilder input;

String output;

public Converter() {

input = new StringBuilder(" ");

}

public static boolean isNumeric(String str)

{

try

{

int d = Integer.parseInt(str);

}

catch (NumberFormatException nfe)

{

return false;

}

return true;

}

public String get(String line) {

input = new StringBuilder("");

String[] words = line.split(" ");

;

int i, temp;

for (i = 0; i < words.length; i++) {

if (i == 0 && isNumeric(words[i]) && words[i].length() == 1) {

temp = Integer.parseInt(words[i]);

input.append(CapitalMap[temp]);

}

else if (isNumeric(words[i]) && words[i].length() == 1) {

temp = Integer.parseInt(words[i]);

input.append(smallMap[temp]);

} else {

input.append(words[i]);

}

input.append(" ");

}

output = input.toString();

return output;

}

}

Driver.java:

package syemmetric;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Scanner;

public class Driver {

public static void main(String[] args) throws IOException {

Scanner sc = new Scanner(System.in);

System.out.print("Enter the name of the input file : ");

FileReader inputFile = new FileReader(sc.next());

BufferedReader br = new BufferedReader(inputFile);

System.out.print("Enter the name of the output file: ");

FileWriter outputFile = new FileWriter(sc.next());

BufferedWriter bw = new BufferedWriter(outputFile);

String line;

Converter C = new Converter();

while ((line = br.readLine()) != null) {

String outline = C.get(line);

System.out.println(outline);

bw.write(outline + " ");

}

br.close();

bw.close();

sc.close();

}

}

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