alphabet - w3toppers.com

Randomly choosing from a list with weighted probabilities

The idea: Iterate through all the elements and set the value of each element as the cumulative frequency thus far. Generate a random number between 1 and the sum of all frequencies Do a binary search on the values for this number (finding the first value greater than or equal to the number). Example: Element … Read more

Generating an array of letters in the alphabet

I don’t think there is a built in way, but I think the easiest would be char[] alpha = “ABCDEFGHIJKLMNOPQRSTUVWXYZ”.ToCharArray();

Convert integer into its character equivalent, where 0 => a, 1 => b, etc

Assuming you want lower case letters: var chr = String.fromCharCode(97 + n); // where n is 0, 1, 2 … 97 is the ASCII code for lower case ‘a’. If you want uppercase letters, replace 97 with 65 (uppercase ‘A’). Note that if n > 25, you will get out of the range of letters.

Most efficient way to get next letter in the alphabet using PHP

The most efficient way of doing this in my opinion is to just increment the string variable. $str=”a”; echo ++$str; // prints ‘b’ $str=”z”; echo ++$str; // prints ‘aa’ As seen incrementing ‘z’ give ‘aa’ if you don’t want this but instead want to reset to get an ‘a’ you can simply check the length … Read more

Iterating through the Alphabet – C# a-caz

First effort, with just a-z then aa-zz public static IEnumerable<string> GetExcelColumns() { for (char c=”a”; c <= ‘z’; c++) { yield return c.ToString(); } char[] chars = new char[2]; for (char high=”a”; high <= ‘z’; high++) { chars[0] = high; for (char low = ‘a’; low <= ‘z’; low++) { chars[1] = low; yield return … Read more

Quickest way to enumerate the alphabet

(Assumes ASCII, etc) for (char c=”A”; c <= ‘Z’; c++) { //do something with letter } Alternatively, you could split it out to a provider and use an iterator (if you’re planning on supporting internationalisation): public class EnglishAlphabetProvider : IAlphabetProvider { public IEnumerable<char> GetAlphabet() { for (char c=”A”; c <= ‘Z’; c++) { yield return … Read more