here is my question. I am coding on the sortedArraylist class. i am stucking on the method which i circle the in red. Also, the toString method as well. Btw, this is Java program. Anyone could help with those two method?

interface Iterable ArrayList -elements : Array of E -size: Integer +ArrayList() +ArrayList(capacity : Integer) SortedArrayList> -list : ArrayList 1 +size(): Integer +toString(): String +indexOf(value: E): Integer +isEmpty(): Boolean +contains(value: E): Boolean +add(value: E) +add(index: Integer, value : E) +remove(index: Integer) +set(index: Integer, value : E) +clear() +addAll(other : ArrayList of E) +iterator(): Iterator +ensureCapacity(capacity : Integer) -checkIndex(index: Integer) +SortedArrayList() +SortedArrayList(initialCapacity: Integer) +toArray(template: E[]): E[] + size(): Integer +isEmpty(): Boolean |+clear() +contains(value : E): Boolean -> +indexOf(value : E): Integer +get(index: Integer) : E +get(value. E, results : E[]): E[] +add(value: E) +remove(index: Integer) +iterator(): Iterator +toString(): String -- interface Comparable