Lotto generate algorithm (C,C++,Java,Javascript,Python)

README.md

##Lotto generate algorithm

lotto-cpp11.cpp

#include <vector>
#include <algorithm>
#include <ctime>
#include <stdio.h>
using namespace std;
 
int main() {
    srand((unsigned int) time(NULL));
    vector<int> num;
    for (int i = 1; i <= 45; i++)
        num.push_back(i);      //1~45로 초기화

    random_shuffle(num.begin(), num.end());      //모두 섞음
    sort(num.begin(), num.begin() + 6);   //앞 6개 숫자만 정렬
    for (int n : vector<int>(num.begin(), num.begin() + 6))
        printf("%02d ", n);   //표시
    return 0;
}

lotto-cpp14.cpp

#include <vector>
#include <algorithm>
#include <random>
#include <chrono>
#include <stdio.h>
using namespace std;
 
int main() {
    unsigned seed = chrono::system_clock::now().time_since_epoch().count();
    mt19937_64 rnd(seed);
    vector<int> num;
    for (int i = 1; i <= 45; i++)
       num.push_back(i);      //1~45로 초기화

    shuffle(num.begin(), num.end(), rnd);      //모두 섞음
    sort(num.begin(), num.begin() + 6);   //앞 6개 숫자만 정렬
    for (int n : vector<int>(num.begin(), num.begin() + 6))
       printf("%02d ", n);   //표시
    return 0;
}

lotto-lodash.js

console.log(_(_.range(1,46)).sampleSize(5).sortBy()+'');

lotto.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void swap(int* a, int* b) {
    int temp = *a;
    *a = *b;
    *b = temp;
}
int comp(const void *a, const void *b) {
    int v = *(int*) a - *(int*) b;
    return v ? v > 0 ? 1 : -1 : 0;
}
void random_shuffle(int arr[], int size) {
    int i;
    for (i = size - 1; i > 0; i--)
       swap(&arr[i], &arr[rand() % (i + 1)]);
}
 
int main(void) {
    int num[45], i;
    srand(time(NULL));
    for (i = 0; i < 45; i++)
       num[i] = i + 1; //1~45로 초기화
 
    random_shuffle(numbers, 45);     //모두 섞음
    qsort(num, 6, sizeof(int), comp); //앞 6개 숫자만 정렬
    for (i = 0; i < 6; i++)
       printf("%02d ", num[i]);     //표시
    return 0;
 
} 

lotto.java

import java.util.*;
 
public class LottoGen {
   public static void main(String[] args) {
       List<Integer> num = new Vector<Integer>(45);
       for (int i = 1; i <= 45; i++)
          num.add(i); // 1~45로 초기화

       Collections.shuffle(num);  //모두 섞음
       List<Integer> selected = num.subList(0, 6); // 앞 6개 숫자만 정렬
       Collections.sort(selected);
       for (int n : selected)
          System.out.format("%02d ", n); // 표시
   }
} 

lotto.js

function swap(arr, a, b) {
   var temp = arr[a];
   arr[a] = arr[b];
   arr[b] = temp;
}
 
function random_shuffle(arr) {
   for (var i = arr.length - 1; i > 0; i--)
       swap(arr, i, Math.floor(Math.random() * (i + 1)));
}
 
(function() {
   var num = [];
   for (var i = 1; i <= 45; i++)
       num.push(i);  // 1~45로 초기화

   random_shuffle(num); //모두 섞음
   var selected = num.slice(0, 6);   //앞 6개 숫자만 정렬
   selected.sort(function(a,b){return a-b;});
   console.log(selected); // 표시
})();

lotto.py

import random

selected = random.sample(range(1, 46), 6) #1~45중 숫자 6개 뽑음
selected.sort() #정렬
print(selected) #표시