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tridibsamantatridibsamanta
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Update ArrayList_Learn.java
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‎ArrayList_Learn.java‎

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import java.util.ArrayDeque;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Deque;
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import java.util.Iterator;
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import java.util.List;
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import java.util.ListIterator;
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import java.util.Map;
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import java.util.Set;
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import java.util.TreeMap;
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import java.util.TreeSet;
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/*
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* An ArrayList is a dynamic-sized array. It grows and shrinks in size

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