Created
September 27, 2010 17:13
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/* | |
* foo.c | |
* | |
* Created on: Sep 27, 2010 | |
* Author: wesley | |
*/ | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
int max_elem(int* v, int n) { | |
int i; | |
int max = v[0]; | |
for (i = 0; i < n; i++) { | |
if (max < v[i]) { | |
max = v[i]; | |
} | |
} | |
return max; | |
} | |
void print_vector(int* v, int n) { | |
int i; | |
for (i = 0; i < n; i++) { | |
printf(" %d", v[i]); | |
} | |
printf("\n"); | |
} | |
void count_sort(int* v, int n) { | |
int i, j; | |
int max = max_elem(v, n); | |
int* temp = (int*)malloc(sizeof(int) * n); | |
memset(temp, 0, max); | |
for(i = 0; i < n; i++) { | |
temp[v[i]]++; | |
} | |
i = j = 0; | |
for (i = 0; i < n; i++) { | |
while (temp[j] == 0) j++; | |
v[i] = j; | |
temp[j]--; | |
} | |
free(temp); | |
} | |
int main(int argc, char** argv) { | |
int v[10] = {9,8,7,6,5,4,3,2,1,0}; | |
print_vector(v, 10); | |
count_sort(v, 10); | |
print_vector(v, 10); | |
return 0; | |
} |
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