Java 查找ArrayList的Minimum元素

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import java.util.ArrayList;

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import java.util.Collections;

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public class Main {

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  public static void main(String[] args) {

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    //create an ArrayList object

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    ArrayList arrayList = new ArrayList();

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    //Add elements to Arraylist

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    arrayList.add(new Integer("327482"));

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    arrayList.add(new Integer("13408"));

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    arrayList.add(new Integer("802348"));

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    arrayList.add(new Integer("345308"));

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    arrayList.add(new Integer("509324"));

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    Object obj = Collections.min(arrayList);

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