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-rw-r--r--algorithms/selection_sort.cc45
1 files changed, 45 insertions, 0 deletions
diff --git a/algorithms/selection_sort.cc b/algorithms/selection_sort.cc
new file mode 100644
index 0000000..1c42a78
--- /dev/null
+++ b/algorithms/selection_sort.cc
@@ -0,0 +1,45 @@
+#include <iostream>
+
+#define N 4
+
+using namespace std;
+
+
+void
+selectionSort(int *A, int n)
+{
+ int i, j, max, maxpos;
+ for (j=n-1; j>0; j--) {
+ /* find max between A[0],....A[j] */
+ max = A[j];
+ maxpos = j;
+ for (i=j-1; i>=0; i--) {
+ if (A[i]>max) {
+ max = A[i];
+ maxpos = i;
+ }
+ }
+ /* swap */
+ A[maxpos] = A[j];
+ A[j] = max;
+ }
+}
+
+
+int
+main (int argc, char * const argv[]) {
+ int A[N] = {3,1,1,2};
+
+ for(unsigned int i=0; i<N; i++) {
+ cout << A[i];
+ }
+ cout << endl << "sorted:" << endl;
+ selectionSort(A, N);
+ for(unsigned int i=0; i<N; i++) {
+ cout << A[i];
+ }
+ cout << endl;
+
+ return 0;
+}
+