numbers

An improved isNumeric() function?

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In my opinion, if it’s an array then its not numeric. To alleviate this problem, I added a check to discount arrays from the logic You can have that problem with any other object as well, for example {toString:function(){return “1.2”;}}. Which objects would you think were numeric? Number objects? None? Instead of trying to blacklist … Read more

Generating the partitions of a number

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It’s called Partitions. [Also see Wikipedia: Partition (number theory).] The number of partitions p(n) grows exponentially, so anything you do to generate all partitions will necessarily have to take exponential time. That said, you can do better than what your code does. See this, or its updated version in Python Algorithms and Data Structures by … Read more

Explanation on Integer.MAX_VALUE and Integer.MIN_VALUE to find min and max value in an array

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but as for this method, I don’t understand the purpose of Integer.MAX_VALUE and Integer.MIN_VALUE. By starting out with smallest set to Integer.MAX_VALUE and largest set to Integer.MIN_VALUE, they don’t have to worry later about the special case where smallest and largest don’t have a value yet. If the data I’m looking through has a 10 … Read more

Format Number like Stack Overflow (rounded to thousands with K suffix)

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Like this: (EDIT: Tested) static string FormatNumber(int num) { if (num >= 100000) return FormatNumber(num / 1000) + “K”; if (num >= 10000) return (num / 1000D).ToString(“0.#”) + “K”; return num.ToString(“#,0”); } Examples: 1 => 1 23 => 23 136 => 136 6968 => 6,968 23067 => 23.1K 133031 => 133K Note that this will … Read more