implements selection sort

c/selection-sort.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+
+void swap(int *a, int *b) {
+    int temp = *a;
+    *a = *b;
+    *b = temp;
+}
+
+void selection_sort(int arr[], int len) {
+    int curr_low;
+    int low_index = 0;
+    int pass_index = 0;
+
+    for (int i = 0; i < len; i++) {
+        low_index = i;
+        for (int j = i + 1; j < len; j++) {
+            if (arr[i] > arr[j]) {  // if we encounter a new low
+                low_index = j;
+            }
+        }
+        swap(&arr[i], &arr[low_index]);
+    }
+}
+
+void print_array(int arr[], int len) {
+    printf("[ ");
+    for (int i = 0; i < len; i++) {
+        printf("%d ", arr[i]);
+    }
+    printf("]\n");
+}
+
+int main() {
+    int arr[6] = {5, 3, 4, 2, 1, 7};
+    selection_sort(arr, 6);
+    print_array(arr, 6);
+}