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Write a program to get the number of pairs which can be formed such that the man is elder than woman.

Input (List, List) Output (Integer)
`[Krishna-18, Ram-25, Arun-22, Sunil-27, Shankar-33] and [Mounika-18, Madhu-20, Archana-22, Anusha-25, Kavya-27]` 14
`[Jay-3, Chaitanya-15, Arjun-3] and [Padma-2, Sandhya-12, Chitra-3]` 5
`[Sunil-24, Anand-25, Suman-27, Chanti-30, Jayanth-35, Gopi-37] and [Jyothi-19, Bindu-17, Sindu-16, Hema-18, Anjali-20, Madhu-23]` 36
`[Sunil-24, Anand-25, Suman-27, Chanti-30, Jayanth-35] and [Jyothi-19, Bindu-17, Sindu-27, Hema-18, Anjali-24]` 21
`[Abhishek-10, Vinod-27, Sai-23, Chandra-19] and [Aiswarya-33, Bindu-45, Sindu-30, Hema-27]` 0

``` import java.util.*; class ManElderThanWoman {     public static void main(String s[])    {        ArrayList<Person> men = new ArrayList<Person>();        men.add(new Person("Krishna", 18));        men.add(new Person("Ram", 25));        men.add(new Person("Arun", 22));        men.add(new Person("Sunil", 27));        men.add(new Person("Shankar", 33));        ArrayList<Person> women = new ArrayList<Person>();        women.add(new Person("Mounika", 18));        women.add(new Person("Madhu", 20));        women.add(new Person("Archana", 22));        women.add(new Person("Anusha", 25));        women.add(new Person("Kavya", 27));        System.out.println("Number of pairs in which man is elder than woman : " + pairMenAndWomen(men, women));    }     private static int pairMenAndWomen(List<Person> men, List<Person> women) { ```
```     } } class Person { String name; int age; Person(String name, int age) { this.name = name; this.age = age; } @Override public String toString() { return name + "-" + age; } } ```

Topic: Java ArrayList

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