Description

Determine if the given character is a digit or not.

Example

• For symbol = '0', the output should be isDigit(symbol) = true;

• For symbol = '-', the output should be isDigit(symbol) = false.

Input/Output

• [execution time limit] 4 seconds (js)

• [input] char symbol

A character which is either a digit or not.

• [output] boolean

true if symbol is a digit, false otherwise.

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
    console.log("This prints to the console when you Run Tests");
    return "Hello, " + name;
}