I need some way to find words that contain any combination of characters and digits but exactly 4 digits only, and at least one character. EXAMPLE: a1a1a1a1 // Match 1234 // NO ...

s.isdigit() s.isnumeric() s.isdecimal() I always get as output either all True or all False for each value of s (which is a string). What's the difference between the three? Can you provide an example that gives …

Feb 3, 2018 · Say I have a multi-digit integer in C. I want to break it up into single-digit integers. 123 would turn into 1, 2, and 3. How can I do this, especially if I don't know how many digits the integer...

Nov 1, 2013 · I'd like to extract elements beginning with digits from a character vector but there's something about POSIX regular expression syntax that I don't understand. I would think that vec <- …

123 Only 1 and 3 are matched by the regex \d; 2 is not. Generally for a sequence of digit numbers without other characters in between, only the odd order digits are matches, and the even order digits …

What is the most compact possible way to sum up a number in javascript until there is only one digit left. For example: You input 5678 then the script adds it together (5+6+7+8) and gets 26, but since its …

Getting each individual digit from a whole integer Asked 15 years, 6 months ago Modified 1 year, 7 months ago Viewed 171k times

Dec 15, 2009 · Convert the number to a string so you can iterate over it, then convert each digit (character) back to an int inside a list-comprehension:

Feb 26, 2013 · This contrasts with IsDigit, which determines if a Char is a radix-10 digit. Valid numbers are members of the following categories in UnicodeCategory: DecimalDigitNumber Decimal digit …

Nov 25, 2018 · How to displays the last four digits of the Numbers in this format: XXXX-XXXX-XXXX-1234. In other words, use Xs for the first 12 digits of the card number and actual numbers for the last …