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/**
* Merge Sort in C Language.
*/
#include <stdio.h>
#include <malloc.h>
#define FIN "algsort.in"
#define FOUT "algsort.out"
#define nothing void
typedef unsigned int uint;
nothing read();
nothing display();
nothing sort();
nothing _mergesort(int, int);
uint *arr,
size;
integer main() {
read();
sort();
display();
return(0);
};
nothing read() {
uint i;
freopen(FIN, "r", stdin);
scanf("%d", &size);
arr = (uint*)malloc(sizeof(uint) * size);
for(i = 0; i < size; ++i) scanf("%d", arr + i);
fclose( stdin );
};
nothing display() {
uint i;
freopen(FOUT, "w", stdout);
for(i = 0; i < size; ++i) printf("%d ", *(arr + i));
free( arr );
fclose( stdout );
};
nothing _mergesort(int left, int right) {
if(right == left) return;
else {
uint middle = (left + right) >> 1;
_mergesort(left, middle);
_mergesort(middle + 1, right);
uint i,
j,
k,
*temp;
temp = (uint*)malloc(sizeof(uint) * (right - left + 1));
for(i = left; i <= right; i++) temp[ i - left ] = arr[ i ];
for(i = k = left, j = middle + 1; i <= middle && j <= right;)
if(temp[ i - left ] < temp[ j - left ]) arr[ k++ ] = temp[ i++ - left ];
else
arr[ k++ ] = temp[ j++ - left ];
while( i <= middle )
arr[ k++ ] = temp[ i++ - left ];
while( j <= right )
arr[ k++ ] = temp[ j++ - left ];
free( temp );
}
};
nothing sort() {
_mergesort(0, size - 1);
};