Radix sort is an algorithm. Radix Sort sorts the elements by processing its individual digits. Radix sort processing the digits either by Least Significant Digit(LSD) method or by Most Significant Digit(MSD) method. Read more about C Programming Language.
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#include "stdio.h"
#define MAX 100
#define SHOWPASS
void print(int *a, int n) {
int i;
for (i = 0; i < n; i++)
printf("%dt", a[i]);
}
void radix_sort(int *a, int n) {
int i, b[MAX], m = 0, exp = 1;
for (i = 0; i < n; i++) {
if (a[i] > m)
m = a[i];
}
while (m / exp > 0) {
int box[10] = { 0 };
for (i = 0; i < n; i++)
box[a[i] / exp % 10]++;
for (i = 1; i < 10; i++)
box[i] += box[i - 1];
for (i = n - 1; i >= 0; i--)
b[--box[a[i] / exp % 10]] = a[i];
for (i = 0; i < n; i++)
a[i] = b[i];
exp *= 10;
#ifdef SHOWPASS
printf("nnPASS : ");
print(a, n);
#endif
}
}
int main() {
int arr[MAX];
int i, num;
printf("nEnter total elements (num < %d) : ", MAX);
scanf("%d", &num);
printf("nEnter %d Elements : ", num);
for (i = 0; i < num; i++)
scanf("%d", &arr[i]);
printf("nARRAY : ");
print(&arr[0], num);
radix_sort(&arr[0], num);
printf("nnSORTED : ");
print(&arr[0], num);
return 0;
}
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