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How exactly does tail recursion work?
I almost understand how tail recursion works and the difference between it and a normal recursion. I only don't understand why it doesn't require stack to remember its return address.
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How to detect my browser version and operating system using JavaScript?
...set,ix;
// In Opera, the true version is after "Opera" or after "Version"
if ((verOffset=nAgt.indexOf("Opera"))!=-1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset+6);
if ((verOffset=nAgt.indexOf("Version"))!=-1)
fullVersion = nAgt.substring(verOffset+8);
}
// In MSIE, the t...
Permutations in JavaScript?
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If you notice, the code actually splits the chars into an array prior to do any permutation, so you simply remove the join and split operation
var permArr = [],
usedChars = [];
function permute(input) {
var i, c...
Algorithm for Determining Tic Tac Toe Game Over
...ixed number of moves in a draw tic-tac-toe game once the last move is made if it wasn't a winning move it's by default a draw game.
edit: this code is for an n by n board with n in a row to win (3x3 board requries 3 in a row, etc)
edit: added code to check anti diag, I couldn't figure out a non lo...
if else in a list comprehension [duplicate]
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>>> l = [22, 13, 45, 50, 98, 69, 43, 44, 1]
>>> [x+1 if x >= 45 else x+5 for x in l]
[27, 18, 46, 51, 99, 70, 48, 49, 6]
Do-something if <condition>, else do-something else.
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Best way to find if an item is in a JavaScript array? [duplicate]
What is the best way to find if an object is in an array?
8 Answers
8
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Check if two unordered lists are equal [duplicate]
I'm looking for an easy (and quick) way to determine if two unordered lists contain the same elements:
8 Answers
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How to compare software version number using js? (only number)
...rom the input strings and then compare pairs of parts from the two arrays; if the parts are not equal we know which version is smaller.
There are a few of important details to keep in mind:
How should the parts in each pair be compared? The question wants to compare numerically, but what if we ha...
Checking for empty arrays: count vs empty
This question on ' How to tell if a PHP array is empty ' had me thinking of this question
12 Answers
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Does the ternary operator exist in R?
... asks, is there a control sequence in R similar to C's ternary operator ? If so, how do you use it? Thanks!
7 Answers
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