diff --git a/cpp/radix_sort.cpp b/cpp/radix_sort.cpp new file mode 100644 index 0000000..a3d084f --- /dev/null +++ b/cpp/radix_sort.cpp @@ -0,0 +1,50 @@ +// C++ implementation of Radix Sort + +#include +using namespace std; +int getMax(int arr[], int n) +{ + int mx = arr[0]; + for (int i = 1; i < n; i++) + if (arr[i] > mx) + mx = arr[i]; + return mx; +} +void countSort(int arr[], int n, int exp) +{ + int output[n]; + int i, count[10] = { 0 }; + for (i = 0; i < n; i++) + count[(arr[i] / exp) % 10]++; + for (i = 1; i < 10; i++) + count[i] += count[i - 1]; + for (i = n - 1; i >= 0; i--) { + output[count[(arr[i] / exp) % 10] - 1] = arr[i]; + count[(arr[i] / exp) % 10]--; + } + for (i = 0; i < n; i++) + arr[i] = output[i]; +} +void radixsort(int arr[], int n) +{ + int m = getMax(arr, n); + for (int exp = 1; m / exp > 0; exp *= 10) + countSort(arr, n, exp); +} +void print(int arr[], int n) +{ + for (int i = 0; i < n; i++) + cout << arr[i] << " "; +} + + +int main() +{ + int arr[] = { 175, 40, 70, 95, 809, 25, 2, 66 }; + int n = sizeof(arr) / sizeof(arr[0]); + + // Function Call + radixsort(arr, n); + print(arr, n); + return 0; +}