Remove repeated elements from ArrayList in Java
Last Updated :
11 Dec, 2018
Prerequisite: ArrayList in Java
Given an ArrayList, the task is to remove repeated elements of the ArrayList in Java.
Examples:
Input: ArrayList = [1, 2, 2, 3, 4, 4, 4]
Output: [1, 2, 3, 4]
Input: ArrayList = [12, 23, 23, 34, 45, 45, 45, 45, 57, 67, 89]
Output: [12, 23, 34, 45, 57, 67, 89]
Below are the various methods to remove repeated elements an ArrayList in Java:
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