A string representing the value of the offer (55).

Title Description

Implement a function to determine whether a string represents a numeric value (including integers and decimals). For example, the string "+100", "5e2", "123", "3.1416" and " -1E-16" all represent numeric values. But "12e", "1a3.14", "1.2.3", "+-5" and "12e+4.3" are not.

Code Listing 1:

public class Solution {public    Boolean isnumeric (char[] str) {        string string = string.valueof (str);        return String.matches ("[\\+-]?[ 0-9]* (\\.[ 0-9]*)? ([ee][\\+-]? [0-9]+)?}    }

Code Listing 2:

<span style= "color: #000099;" >public class Solution {public    Boolean isnumeric (char[] str) {        try {            double re = double.parsedouble (new St Ring (str));        catch (NumberFormatException e) {            return false;        }        return true;    }} </span>

A string representing the value of the offer (55).