CodeIgniter

In this page I explain how to “include” or load multiple views by keeping the controller code less verbose as possible.

Hope this help!

Input

Your input file will consist of a single integer N, the number of test cases in the file, followed by N pairs of integers a and c. All tokens in the input will be separated by some whitespace.

Output

Your output should consist of N newline-separated integers, each one representing b for the corresponding pair (a, c) in the input.

Constraints

5 ≤ N ≤ 20
1 ≤ a, c ≤ 10¹⁰

Sample input:

5
18 24
77 176
34 144
24 426
273 628

Sample output:

1
2
4
18
2

Code (C++):

//============================================================================
// Name        : almost.cpp
// Author      : Francesco Laurita
// Version     : 1.0
// Copyright   : Francesco Laurita
// Description :
//============================================================================

#include <algorithm>
#include <iostream>
using namespace std;

int main() {
	int ntest, a, c, b;
	cin >> ntest;
	while (ntest--) {
		cin >> a;
		cin >> c;
		b = c / a;
		if (abs((b + 1) * a - c) < abs(b * a - c)) {
			b++;
		}
		cout << b << endl;
	}
	return 0;
}

Input

You should first read an integer N, the number of test cases. The next N lines will contain N values of X.

Constraints

0 ≤ X ≤ 2147483647
1 ≤ N ≤ 100

Output

For each value of X, you should output the number of ways to write X as the sum of two squares.

Sample input:

5
10
25
3
0
1

Sample output:

1
2
0
1
1

Code (C++):

//============================================================================
// Name        : doublesquare.cpp
// Author      : Francesco Laurita
// Version     : 1.0
// Copyright   : Francesco Laurita
// Description :
//============================================================================

#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;

bool check(const int a, const int b, const int c) {
	return pow(a,2) + pow(b,2) == c;
}
int main(int argc, char **argv) {

	ifstream fp(argv[1]);
	if (!fp){
		cerr << "Unable to open file!\n";
		return 1;
	}

	int ntest;
	fp >> ntest;
	fp.ignore();
	int a, b;
	for (int i = 0; i < ntest; i++) {
		int current, found;
		fp >> current;
		b = sqrt(current);
		a = sqrt(current - (pow(b,2)));
		found = 0;
		while (a <= b && b >= 0) {
			if (check(a, b, current)) {
				found++;
			}
			b--;
			a = sqrt(current - (pow(b,2)));
		}
		cout << found << endl;
	}
	fp.close();
	return 0;
}

Since the bound of 9 words is really low I just apply the sort operation on all of permutations (9!)

You’ve been given a list of words to study and memorize. Being a diligent student of language and the arts, you’ve decided to not study them at all and instead make up pointless games based on them. One game you’ve come up with is to see how you can concatenate the words to generate the lexicographically lowest possible string.

Input

As input for playing this game you will receive a text file containing an integer N, the number of word sets you need to play your game against. This will be followed by N word sets, each starting with an integer M, the number of words in the set, followed by M words. All tokens in the input will be separated by some whitespace and, aside from N and M, will consist entirely of lowercase letters.

Output

Your submission should contain the lexicographically shortest strings for each corresponding word set, one per line and in order.

Constraints

1 <= N <= 100
1 <= M <= 9
1 <= all word lengths <= 10

Sample input:

5
6 facebook hacker cup for studious students
5 k duz q rc lvraw
5 mybea zdr yubx xe dyroiy
5 jibw ji jp bw jibw
5 uiuy hopji li j dcyi

Sample output:

cupfacebookforhackerstudentsstudious
duzklvrawqrc
dyroiymybeaxeyubxzdr
bwjibwjibwjijp
dcyihopjijliuiuy

The code (C++):

//============================================================================
// Name        : studious-student.cpp
// Author      : Francesco Laurita
// Version     : 1.0
// Copyright   : Francesco Laurita
// Description : Studious Student solution (FB hacke cup qualification round)
//============================================================================

#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <algorithm>
using namespace std;

bool compare(const string a, const string b) {
	string aa = a;
	string bb = b;
	if (aa + bb < bb + aa) {
		return true;
	}
	return false;
}
int main(int argc, char **argv) {
	ifstream fp(argv[1]);
	string *current = NULL;
	int nlines;

	if (!fp) {
		cerr << "Unble to open file!" << endl;
		return 1;
	}

	fp >> nlines;
	fp.ignore();

	for (int i = 0; i < nlines; i++) {

		string result;
		int nword;
		string line, token;
		getline(fp, line);

		stringstream ss(line);
		ss >> nword;
		current = new string[nword];
		for (int j = 0; j < nword; j++) {
			ss >> token;
			current[j] = token;
		}
		std::sort(current, current + nword, compare);

		for (int j = 0; j < nword; j++) {
			result.append(current[j]);
		}
		cout << result << endl;

	}

	fp.close();
	delete[] current;
	return 0;
}

You’re interested in figuring out the number of case-insensitive unique characters in some string. This sounds simple and easily-automated, so you just decide to just go for it.

Input

Your input will consist of an integer N followed by a newline. N test cases will follow, all separated by newlines. Each test case is a string of letters containing some combination of letters (upper- and lower-case are allowed), the space character, and the characters contained in the string ?!.’$%&*:;,.

Output

Your output should consist of one integer per case, separated by whitespace, indicating the number of case-insensitive unique characters contained in the input string.

Constraints

5 ≤ N ≤ 25
Input strings will not exceed 100 characters in length.

Sample input:

5
Lorem ipsum
Eclipse is a pretty nice editor.
This is not a very interesting case.
The quick brown fox jumps over the lazy dog
Bonk.

Sample output:

10
15
15
27
5

The code (C):

/*
 ============================================================================
 Name        : characters-c.c
 Author      : Francesco Laurita
 Version     : 1.0
 Copyright   : Francesco Laurita
 Description :
 ============================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#define CACHE_SIZE 50
char cache[CACHE_SIZE] = { '\0' };

void add(char c) {
	char *chr = strchr(cache, c);
	//if char is not present into the current cache, it will be appended
	if (chr == NULL)
		cache[strlen(cache)] = c;
}
int main(int argc, char **argv) {

	FILE *fp = fopen(argv[1], "r");
	if (!fp) {
		fprintf(stderr, "Unable to open file\n");
		return EXIT_FAILURE;
	}
	char current;
	//Skip the first line
	while((current = fgetc(fp)) != '\n'){;}

	//Read the whole file char by char
	while (1) {

		current = fgetc(fp);

		if (current != '\n' && current != EOF) {
			add(tolower(current));
		} else {//EOL or EOF
			printf("%d\n", (int) strlen(cache));
			bzero(cache, CACHE_SIZE);
		}

		if (current == EOF)
			break;
	}

	fclose(fp);
	return EXIT_SUCCESS;
}

PHP Version:

#!/usr/bin/php
<?php
$data = file($argv[1]);
if (!$data) exit(1);
array_shift($data);
foreach ($data as $row){
    $row = strtolower(trim($row));
    echo count(array_unique(str_split($row))) . "\n";
}
?>

The first round was so buggy that I was not able to submit anything! BTW, just for fun I have solved some problems of  ”Facebook Hacker Cup Test Round“.

Problem: Reverser

You’ve intercepted a series of transmissions encrypted using an interesting and stupid method, which you have managed to decipher. The messages contain only spaces and lowercase English characters, and are encrypted as follows: for all words in a sentence, the ith word (1-based) word is replaced with the word generated by applying the following recursive operation f(word, i):

5
this is a short sentence
this encryption is lame
racecar
test problems are pretty easy to solve
q we rty uiop

siht is a ortsh encesent
siht oniptrycen is lame
racecar
tset msleobpr are ttypre easy to solve
q we rty uiop

The code (C++):

//============================================================================
// Name        : reverse-cpp.cpp
// Author      : Francesco Laurita
// Version     : 1.0
// Copyright   : Francesco Laurita
// Description :
//============================================================================

#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <math.h>
#include <vector>
using namespace std;

string apply(string in, int pos){
	int slen = in.length();
	if (slen <= pos){
		return in;
	}else{
		int mid = ceil(slen / 2);
		string right = in.substr(mid,slen);
		string left  = in.substr(0,mid);
		return apply(right,pos) + apply(left,pos);
	}
}
int main(int argc, char **argv) {

	ifstream fp(argv[1]);
	if (!fp){
		cerr << "Unble to open file!" << endl;
		return 1;
	}
	int nlines;
	fp >> nlines;
	fp.ignore();
	for (int i = 0; i < nlines; i++){
		string line,tok;
		getline(fp,line);
		stringstream ss(line);
		vector<string> tokens;
		int j = 1;
		while (ss >> tok){
			tokens.push_back(apply(tok,j));
			j++;
		}
		for (vector<string>::iterator it = tokens.begin(); it != tokens.end(); ++it){
			cout << *it;
			if (it != tokens.end()-1)
				cout << " ";
		}
		tokens.empty();
		cout << endl;
	}
	fp.close();
	return 0;
}

Code is also available on pastebin: http://pastebin.com/nW2KBiyZ

Non aggiorno un po’ perchè non ho nulla di particolarmente interessante da farvi leggere, Non aggiorno perchè preferisco essere un “lurker”.

Pubblico questo post unicamente per testare gli ultimi upgrade di wordpres

Cya!

Pagina dopo pagina vengo rapito, le parole lette si trasformano in immagini, focalizzo Marco sulla sua BMW che sfreccia sulle lunghe infinite strade, rapito dalla solitudine, dai giri del motore e dall’irrefrenabile voglia di scoprire cosa si nasconde dietro la prossima curva.
Poi ci sono io, sulla mia moto, e come Marco alzo di tanto in tanto la visiera per odorare sfuggenti profumi dei luoghi che ho attaversato. Non posso fare a meno di sentirmi in sintonia, di capirlo dal profondo dell’anima.

“Fortune” si fa piccolo piccolo e arriva sul tuo cellulare

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