How-to articles, tricks, and solutions about NUMBERS

How to extract numbers from a string in Python?

In Python, you can use regular expressions to extract numbers from a string.

Java Generate Random Number Between Two Given Values

To generate a random number between two given values in Java, you can use the nextInt method of the java.util.Random class. For example:

What is the best way to tell if a character is a letter or number in Java without using regexes?

To tell if a character is a letter or number in Java without using regexes, you can use the Character class and its isLetter() and isDigit() methods.