What is the most Pythonic way to take a dict of lists and produce a new dict with the list items as keys and the previous dict's keys as list items.
Here's a visual explanation:
favorite_fruits = {"alice": {"apple", "orange"}, "bob": {"apple"}, "carol": {"orange"}}
people_by_fruit = {"orange": ...
Well, the first thing that's bad is the the fact that everything is crammed on one line. Max line character count is usually 80.
To handle the hardcoded /, you can use File.separator. (You don't need it anyways for my solution.)
You don't need to use move(); instead, assuming file is a File obje...
The concept is very, very simple: let's do merging run by run.
(A run is, a range without decrement.)
template <class RandomIt>
void RunAwareMergeSort(RandomIt first, RandomIt last) {
RandomIt m_first(first); // the begin of first run of merge
RandomIt i(first); // the locater
while ...
/*
The Sieve of Eratosthenes using a javascript array as
an associative data structure.
*/
function range(start, limit, step) {
var rangeArray = [];
for (var i = start; i < limit; i += step)
rangeArray.push(i);
return rangeArray;
}
function isNotNull(value) { // predi...
Is this query good enough, I mean the performance. Or you suggest any other query or ways.
I want to count email addresses with different status.
var query = from p in sentMailPagingBiz.FetchMulti()
join s in emailAddressBiz.FetchMulti() on p.Id equals s.SentMailPaging_Id
where ...
I am on the learning curve of C and it's capabilities. Below I have tried to create 4 individual programs where the execution is always in order (program 0,1,2,3).
About the program
Program #0 is always executed (called) first, it also creates semid's
Program #1 can ONLY be executed if Program...
I'm developing a php framework called Stack. I just created the autoload.php as follows.
<?php
namespace Stack\Application;
define('ROOT', __DIR__);
class AutoLoader
{
private static $pos = false;
private static $namespace_path = NULL;
private static $namespace_name = NULL;
priv...
(define loop
(lambda (x proc)
(when (not (= x 0))
(eval proc)
(loop (- x 1) proc))))
Is this the best way to create a loop function in Scheme?
I am trying to place my combo box under the words. if you take out the part with the combobox, you can tell that the window is 700x900, but with the combo box in, it becomes a weird format. I want the window to be its regular size, with the combo box positioned underneath.
import javax.swing.*;
...
Could you please review my solution to FizzBuzz? I am using Java 7.
Input file should containt for example this:
3 5 10
2 7 15
Output should containt for example this:
1 2 F 4 B F 7 8 F B
1 F 3 F 5 F B F 9 F 11 F 13 FB 15
Code itself:
package com.codeeval.fizzbuzz;
import java.io.Buffere...
When editing the title of Multiple FizzBuzz from a file, I first wanted to make the title "FizzBuzz from a file" but that exact title already exists which showed an error message:
Considering our different definition of duplicates on Code Review (Just because code does the same thing doesn't m...
import random
def main():
randnums()
print('\nThe total is: ')
def randnums():
for count in range (6):
print(random.randint(1,10), end=' ')
main()
I have tried adding the sum of the count and returning sum but it doesn't work.
I do need to use jquery autocomplete for two inputs. But I have use same processing script for these two elements.
At this stage I am doing it like this.
$("#suburb").autocomplete({
source: function(request, response) {
$.ajax({
url: "includes/state_au_ajax.php",
...
Using JOptionPane ask for 10 numbers from the user. Use an array to
store the values of these 10 numbers. Output on the screen the number with the
greatest value.
When searching for information about the Binary Tree, the code on people's blogs are complicated, so here I'm trying to code a very simple Binary Tree.
Am I missing anything? Is there a better way I could be implementing the BinTree::Remove?
#ifndef _BINTREE_H__
#define _BINTREE_H__
using names...
I coded this function to check for a violation of a primary key in a DataTable; the main idea is to retrieve a list of every row that the same value of the column in input and set an error to it.
Private Sub PrimaryKeyCheck(Of ColumnType)(dt As DataTable, ColumnName As String)
Dim violating...
I built this wrapper over the System.Security.Cryptography.Aes encryption/decryption so that one need only instance the class and call the appropriate methods. This makes it much simpler to work with AES encryption so that developers don't need to reuse the same AES code everywhere they need encr...
I want to create a js MVVM framework, this is my jsfiddle : http://jsfiddle.net/yozawiratama/1zmt7kfd/
and this is my code :
html :
<input type="text" mk="value=test" value="test" />
<br />
<span mk="text=test"></span>
js (markjs) :
(function () {
Mark = {};
var mark = {
tex...
I have written a CFG (text file) parser for my specific needs. I have found other libraries to be much too large. Even other parsers that bill themselves as "simple" run hundreds of line long.
The code that I need reviewed is the parsing and tokenizing of the input. I feel like it can be simpli...
Nested transactions in itself have little to no use in SQL Server (or most other DBMS), I believe only BerkelyDB supports them.
However, in programming they DO have a use in my opinion, but mostly because of the code isolation/separation seen in most programming language.
Imagine the following ...
Here is my first attempt on Sherlock and the beast, but sadly - there are multiple test cases failing for this implementation..Where am I going wrong?
import java.io.*;
import java.util.*;
public class Solution {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
...
This is my submission for the Standing Ovation Question:
def numFriends(st):
friends = 0;
people_standing = int(st[0:1]);
if len(st) <= 1:
return 0;
for j in range(1, len(st)):
char = st[j:j+1];
if people_standing < j and int(char) != 0:
friend...
I have a Morse Code translator, which can translate to and from Morse Code to text.
translator.h
Note that the first three lines are generated by Code::Blocks.
#ifndef SPLIT_H_INCLUDED
#define SPLIT_H_INCLUDED
#endif // SPLIT_H_INCLUDED
#include <iostream>
#include <map>
#include <string>
#in...
Well, the first thing that's bad is the the fact that everything is crammed on one line. Max line character count is usually 80.
To handle the hardcoded /, you can use File.separator. (You don't need it anyways for my solution.)
You don't need to use move(); instead, assuming file is a File obje...
Often I need to perform multiple assignment from a sequence
(e.g. from the result of a split()) but with some semantics
that are not available in the language:
Assign N first elements and silently ignore the rest (like Perl's
list assignment).
>>> a, b = 'foo bar is here'.split()
>>> a, b
('fo...
Before dismissing this as a "spurious interpretation", please consider that these license restrictions are the same ones that protect our names and technical content from being used on sites that promote white supremacy (fancy some KKK pictures slotted between answers, anyone? Or maybe used to i...
Already read this, but OP is using some other method.
My website finds the time till new year. But this website claims to be accurate to the tenth of a second. So what I found out was my timer and their timer is off by about a minute.
var daysSpan = document.getElementById("days");
var hoursSp...
I'm writing a program to help with remembering complex bash commands. On invoking the program, it asks for a description of the desired operation, e.g., "increase volume" or "find orphaned packages", and displays the commands matching the input ordered by closest match.
Matching is determined by...
In General, how to optimize sub queries which have select statements in it?
Here are some ideas to get you started. I will respect the fact that it is an assignment and in the end, you will gain much better understanding of the SQL queries by going through it yourself and learning along the ...