Problem 2. Implment the following operation, to be inchuded in cha singl ise singleLLePair.lategen, hiatagr.so that returns the histogram of the reciplent list. For example, if the recipent list in s. them the histogram would be ts.3ia, a) (2.1)1 because there are 3 copies of 5, 2 copie of Below we recall the operations available in the class Pair Public ela.. Pair,D ( py of 2. You may use any of the operations for singlell defined in the lectures. private publie PairCE.P publie E coxo publie voidsxE) public P grO publie sering tostringo.. Problem 2. Implment the following operation, to be inchuded in cha singl ise singleLLePair.lategen, hiatagr.so that returns the histogram of the reciplent list. For example, if the recipent list in s. them the histogram would be ts.3ia, a) (2.1)1 because there are 3 copies of 5, 2 copie of Below we recall the operations available in the class Pair Public ela.. Pair,D ( py of 2. You may use any of the operations for singlell defined in the lectures. private publie PairCE.P publie E coxo publie voidsxE) public P grO publie sering tostringo