Adding selection sort

Author: bhavnavarshney

Go/sorting/selection.go

@@ -0,0 +1,14 @@
+package sorting
+
+func selectionSort(arr []int, n int) {
+	var minIndex int
+	for iteration := 0; iteration < n; iteration++ {
+		minIndex = iteration
+		for pointer := iteration + 1; pointer < n; pointer++ {
+			if arr[pointer] < arr[minIndex] {
+				minIndex = pointer
+			}
+		}
+		arr[iteration], arr[minIndex] = arr[minIndex], arr[iteration]
+	}
+}