Algorithm · Meta · Medium
Requirements Input: one string, s. Produce True exactly when s matches the standard syntax for a number: A leading + or - may appear. The mantissa can contain an integer portion, a fractional portion, or both; however, it must contain at least one digit overall. An exponent is allowed after e or E; it may begin with a sign and must then contain one or more integer digits. Spaces and every other unexpected character make the input invalid. Notes Interviewers commonly probe…
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