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 …

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 …

Sep 23, 2016 · This solution solves many more "digit of a number" problems than the one using integer division and modulus. Try to find the leading (left-most) digit of the following numbers using both: …

Jun 17, 2015 · In Emacs's regex, why does ^ [^ [:digit:]] match a digit and a new line character before the digit, e.g. it will matches the whole of the second and the third line of 1 1 but not the first line.

If I want to find the sum of the digits of a number, i.e.: Input: 932 Output: 14, which is (9 + 3 + 2) What is the fastest way of doing this? I instinctively did: sum (int (digit) for digit in str (...

Jan 19, 2023 · 1 Instead of converting a number to string and then loop over its digits, you can also take the remainder by 10, i.e., the last digit, and then divide the number by 10 to "shift" it to the right. For …

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...

Aug 27, 2011 · How to find out the units digit of a certain number (e.g. 3 power 2011). What logic should I use to find the answer to this problem?

Jan 28, 2011 · Both of these forms are supported in Python's regular expressions - look for the text {m,n} at that link. And keep in mind that \d{15} will match fifteen digits anywhere in the line, including a 400 …

Mar 10, 2009 · Is there a way to convert a character to an integer in C? For example, from '5' to 5?