Regular Expression (Regex) to match number with exact 1 decimal place, exact 2 decimal places, or upto 2 decimal places

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Case 1: Number must have exact 1 decimal place


Please enter valid decimal number with 1 decimal place.

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Case 2: Number must have exact 2 decimal places


Please enter valid decimal number with 2 decimal places.

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Case 3: Number must have either 1 or 2 decimal places


Please enter valid decimal number upto 2 decimal places.