Square root of a permutation
code-golf permutations
Input: A permutation of numbers 1 through n.
Output a permutation that, when applied twice, gives the input.
Restrictions:
Your algorithm must run in polynomial time in n.
[need: test cases, intro, explanation]
The Second Coming (sometimes called the Second Advent or the Parousia) is primarily a Christian concept regarding a future return of Jesus to Earth after his "first coming" and ascension to heaven about two thousand years ago. The belief is based on messianic prophecies found in the canonical gospels and is part of most Christian eschatologies. Views about the nature of Jesus' Second Coming vary among Christian denominations and among individual Christians.
Most English versions of the Nicene Creed include the following statements: "...he ascended into heaven and is seated at the right hand of...
Osmosis Jones is a 2001 American live-action/animated buddy cop comedy film directed by Tom Sito and Piet Kroon for the animated segments and the Farrelly brothers for the live-action ones. Unusual in this genre, the animated characters are inside the live-action ones: the film is set in a fictionalized version of the human body which resembles a large city, where micro-organisms or any being based in organisms are anthropomorphic and centers on Frank Detorre, a slovenly zookeeper. Osmosis Jones, a white blood cell, teams up with Drix, a cold pill, against Thrax, a deadly virus who plans to kill...
San Mateo High School is an American National Blue Ribbon comprehensive four-year public high school in San Mateo, California serving grades 9–12 as part of the San Mateo Union High School District.
San Mateo High School continues the "Tradition of Excellence" that first started in 1902 and strives to create a unique campus life for all of the students and staff, which remains different from any other high school in the San Mateo Union High School District. There are many programs that define SMHS: the Advancement Via Individual Determination (AVID) Curriculum, Biotechnology Training Facility...
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Challenge
Inspired by this SMBC comic, discussed on reddit, math.stackexchange, and calculus7, the challenge is to return the lowest base such that a number is "fouriest."
Description
[From the comic]
"It's called a Fourier Transform when you take a number and convert it to the base system wh...
Prove that this program terminates or run forever
cops-and-robbers
Introduction:
Halting problem has been shown to have no complete algorithm. Yet it is important to understand what the program does and verifying the program if the program matches with its specification
Challenger
Challenges...
Determine the depth of an array
code-golfarray-manipulation
You're given as input a nested, potentially ragged array of positive integers:
[1, [[2, 3, [[4], 5], 6, [7, 8]], 9, [10, [[[11]]]], 12, 13], 14]
Your task is to determine its depth, which is the nesting-depth of the deepest integer....
You are given the functions: h1(f,*args) and h2(f,*args)
Both are methods which are already defined for you (here the asterisk indicates a variable number of arguments)
f is a function, *args is a list of parameters to be passed to that function
h1 returns a boolean value: True if the function...
-2
i meant how can i make this look better
var express = require('express');
var session = require('express-session');
var mongoose = require('mongoose');
var multer = require('multer');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var passportLocalMo...
