modify insertion sort.

Signed-off-by: Jobin John <[email protected]>

Author: Mystigan

sorts/insertion_sort.go

@@ -2,14 +2,13 @@
 package sorts
 
 func InsertionSort(arr []int) []int {
-	for out := 1; out < len(arr); out++ {
-		temp := arr[out]
-		in := out
-
-		for ; in > 0 && arr[in-1] >= temp; in-- {
-			arr[in] = arr[in-1]
+	for currentIndex := 1; currentIndex < len(arr); currentIndex++ {
+		temporary := arr[currentIndex]
+		iterator := currentIndex
+		for ; iterator > 0 && arr[iterator-1] >= temporary; iterator-- {
+			arr[iterator] = arr[iterator-1]
 		}
-		arr[in] = temp
+		arr[iterator] = temporary
 	}
 	return arr
 }