In java

private ArrayList heap; private int size; public Heap ) f this.heap = new ArrayList(); this.size0; // Problem Heap 1 10 pt // write a method that finds the index of an item's left child. // The parameter parent in this method is the index of the parent element // The left child's index is twice the parent's plus 1 private int leftIndex (int parent) ( int leftIndex 1 //complete this return leftIndex // Problem Heap 2 10 pt // write a method that finds the index of an item's right child