RE-SUBMIT THIS AS PURE JAVASCRIPT (no java libraries!) . import java.util.Scanne
ID: 3770750 • Letter: R
Question
RE-SUBMIT THIS AS PURE JAVASCRIPT (no java libraries!)
. import java.util.Scanner; public class TelephoneNumberTranslator { public static boolean checkFormat(String number) { if (number.length() != 12) { return false; } for (int i = 0; i < number.length(); ++i) { if (i == 3 || i == 7) { if (number.charAt(i) != '-') { return false; } } else if (!(number.charAt(i) >= '0' && number.charAt(i) <= '9') && !(number.charAt(i) >= 'a' && number.charAt(i) <= 'z') && !(number.charAt(i) >= 'A' && number.charAt(i) <= 'Z')){ return false; } } return true; } public static char getIntegerValue(char ch) { if (ch >= 'a' && ch <= 'z') { ch -= 32; } if (ch == 'A' || ch == 'B' || ch == 'C') { return '2'; } else if (ch == 'D' || ch == 'E' || ch == 'F') { return '3'; } else if (ch == 'G' || ch == 'H' || ch == 'I') { return '4'; } else if (ch == 'J' || ch == 'K' || ch == 'L') { return '5'; } else if (ch == 'M' || ch == 'N' || ch == 'O') { return '6'; } else if (ch == 'P' || ch == 'Q' || ch == 'R' || ch == 'S') { return '7'; } else if (ch == 'T' || ch == 'U' || ch == 'V') { return '8'; } else if (ch == 'W' || ch == 'X' || ch == 'Y' || ch == 'Z') { return '9'; } else { return ch; } } public static String getNumber(String number) { String result = ""; for (int i = 0; i < number.length(); ++i) { result += getIntegerValue(number.charAt(i)); } return result; } public static void main(String[] args) { Scanner in = new Scanner(System.in); String number = null; while (true) { System.out .print("enter a 10-character telephone number in the format XXX-XXX-XXXX: "); number = in.next(); if(checkFormat(number) == true){ break; } else{ System.out.println("Invalid Format. Try Again!!"); } } System.out.println("Numerical Representation of " + number + " is " + getNumber(number)); } } Original Problem: Design a JavaScript program: Alphabetic Telephone Number Translator. Many companies use telephone numbers like 555-GET-FOOD so the number is easier for their customers to remember. On a standard telephone, the alphabetic letters are mapped to numbers in the following fashion: A, B and C = 2. D, E and F = 3. G, H and I = 4. J, K and L = 5. M, N and O = 6. P, R and S = 7. T, U and V = 8. W, X, Y and Z = 9. Design a program that asks the user to enter a 10-character telephone number in the format XXX-XXX-XXXX. The program should display the telephone number with any alphabetic characters that appeared in the original translated to their numeric equivalent. For example, if the user enters 555-GET-FOOD the program should display 555-438-3663.
(NO JAVA LIBRARIES, NO "import java.util.Scanner;") please
Explanation / Answer
filename.html
<html>
<body>
<p> Enter a 10-character telephone number </P>
<form name="myform">
<input type="text" name="phone" value="XXX-XXX-XXXX"/>
<input class="sty" type="button" name="submit" value="Get Number"/>
</form>
<p id="number"></p>
<script>
function checkFormat(number)
{
if (number.length != 12)
{
return false;
}
for (var i = 0; i < number.length; i++)
{
if (i == 3 || i == 7)
{
if (number.charAt(i) != '-')
{
return false;
}
}
else if (!(number.charAt(i) >= '0' && number.charAt(i) <= '9') && !(number.charAt(i) >= 'a' && number.charAt(i) <= 'z') && !(number.charAt(i) >= 'A' && number.charAt(i) <= 'Z'))
{
return false;
}
}
return true;
}
function getIntegerValue(ch)
{
ch = ch.toUpperCase();
if (ch == 'A' || ch == 'B' || ch == 'C')
{
return '2';
}
else if (ch == 'D' || ch == 'E' || ch == 'F')
{
return '3';
}
else if (ch == 'G' || ch == 'H' || ch == 'I')
{
return '4';
}
else if (ch == 'J' || ch == 'K' || ch == 'L')
{
return '5';
}
else if (ch == 'M' || ch == 'N' || ch == 'O')
{
return '6';
}
else if (ch == 'P' || ch == 'Q' || ch == 'R' || ch == 'S')
{
return '7';
}
else if (ch == 'T' || ch == 'U' || ch == 'V')
{
return '8';
}
else if (ch == 'W' || ch == 'X' || ch == 'Y' || ch == 'Z')
{
return '9';
}
else
{
return ch;
}
}
function getNumber(form)
{
var result = "";
var number = form.phone.value;
if(checkFormat(number))
{
for (var i = 0; i < number.length; ++i)
{
result += getIntegerValue(number.charAt(i));
}
document.getElementById("number").innerHTML = "Numerical Representation of " + number + " is " + result;
}
else
{
document.getElementById("number").innerHTML = "Invalid Format. Try Again!!";
}
}
</script>
</body>
</html>
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