feat: add IsSorted

slice/slice.go

@@ -842,9 +842,9 @@ func IsAscending[T constraints.Ordered](slice []T) bool {
 	return true
 }
 
-// Isdescending checks if a slice is descending order.
+// IsDescending checks if a slice is descending order.
 // Play: todo
-func Isdescending[T constraints.Ordered](slice []T) bool {
+func IsDescending[T constraints.Ordered](slice []T) bool {
 	for i := 1; i < len(slice); i++ {
 		if slice[i-1] < slice[i] {
 			return false
@@ -854,6 +854,12 @@ func Isdescending[T constraints.Ordered](slice []T) bool {
 	return true
 }
 
+// IsSorted checks if a slice is sorted(ascending or descending).
+// Play: todo
+func IsSorted[T constraints.Ordered](slice []T) bool {
+	return IsAscending(slice) || IsDescending(slice)
+}
+
 // Sort sorts a slice of any ordered type(number or string), use quick sort algrithm.
 // default sort order is ascending (asc), if want descending order, set param `sortOrder` to `desc`.
 // Play: https://go.dev/play/p/V9AVjzf_4Fk