Five real life applications are-
1.Arrangement of leader-board of a game can be done simply through arrays to store the score and arrange them in descending order to clearly make out the rank of each player in the game.
2.A simple question Paper is an array of numbered questions with each of them assigned to some marks.
3.2D arrays, commonly known as, matrix, are used in image processing.
4.It is also used in speech processing, in which each speech signal is an array.
5.Treap data structure: is used in wireless networking.