Arrays类中sort，binarySearch，fill实例

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import java.util.Arrays.*;public class Array {public static void main(String [] args){double[] numbers={6.0,4.4,1.9,2.9,3.4,3.5};java.util.Arrays.sort(numbers);for(int i=0;i<numbers.length;i++)System.out.print(numbers[i]+" ");System.out.println();char[] chars={'a','A','4','F','D','P'};java.util.Arrays.sort(chars,1,3);//从chars【1】到chars【3-1】排序System.out.println(chars);int[] list={2,4,7,10,11,45,50,59,60,66,69,70,79};System.out.println("(1)index is "+java.util.Arrays.binarySearch(list,11));System.out.println("(2)index is "+java.util.Arrays.binarySearch(list, 12));char[] chars2={'a','c','g','x','y','z'};System.out.println("(3)index is "+java.util.Arrays.binarySearch(chars2,'a'));System.out.println("(3)index is "+java.util.Arrays.binarySearch(chars2, 't'));int[] list1={2,4,7,10};int[] list2={2,4,7,10};int[] list3={4,2,7,10};System.out.println(java.util.Arrays.equals(list1, list2));System.out.println(java.util.Arrays.equals(list2,list3));java.util.Arrays.fill(list1, 5);java.util.Arrays.fill(list2,1,3,8);//从chars【1】到chars【3-1】排序displayList(list1);displayList(list2);}public static void displayList(int[] list){for(int i=0;i<list.length;i++){System.out.print(list[i]+" ");}System.out.println();}}

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