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December 19, 2019 01:07
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/** | |
* Mezclar arreglo en C, es decir, hacer aleatorio, sacudir, randomizar | |
* @date 2019-12-18 | |
* @author parzibyte | |
* @see https://parzibyte.me/blog | |
* */ | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
// maximo y minimo son inclusivos | |
int aleatorio_en_rango(int minimo, int maximo) { | |
return minimo + rand() / (RAND_MAX / (maximo - minimo + 1) + 1); | |
} | |
int main(void) { | |
// Como queremos aleatorios, alimentamos a srand | |
// https://parzibyte.me/blog/2019/03/21/obtener-numeros-aleatorios-c/ | |
srand(getpid()); | |
int arreglo[] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; | |
int longitud = | |
sizeof(arreglo) / sizeof arreglo[0];//https://parzibyte.me/blog/2018/09/21/longitud-de-un-arreglo-en-c/ | |
// Impresión | |
printf("Arreglo original:\n"); | |
for (int i = 0; i < longitud; i++)printf("%d,", arreglo[i]); | |
// Ciclo desde 0 hasta longitud de arreglo | |
for (int i = 0; i < longitud; i++) { | |
int indiceAleatorio = aleatorio_en_rango(0, longitud - 1); | |
// Intercambiar el actual con un elemento del índice aleatorio | |
int temporal = arreglo[i]; | |
arreglo[i] = arreglo[indiceAleatorio]; | |
arreglo[indiceAleatorio] = temporal; | |
} | |
printf("\nArreglo mezclado:\n"); | |
for (int i = 0; i < longitud; i++)printf("%d,", arreglo[i]); | |
return 0; | |
} |
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