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Algorithm Challenge Available At CodeFights

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Find the leftmost digit that occurs in a given string.

Example

• For inputString = "var_1__Int", the output should be firstDigit(inputString) = '1';

• For inputString = "q2q-q", the output should be firstDigit(inputString) = '2';

• For inputString = "0ss", the output should be firstDigit(inputString) = '0'.

Hints

• split()
• includes()

Input/Output

• [execution time limit] 5 seconds (ts)

• [input] string inputString

A string containing at least one digit.

Guaranteed constraints:

3 ≤ inputString.length ≤ 10.

• [output] char