java Arrays工具类部分方法

 1         //Arrays.toString()
 2         int[] a = new int[]{1,2,3,4,5,6};
 3         System.out.println(a);
 4         System.out.println(a.toString());
 5         System.out.println(Arrays.toString(a));
 6 
 7         //Arrays.sort()
 8         int[] b = new int[]{6,3,7,1,3,8,4,3,0,3,2};
 9         System.out.println(Arrays.toString(b));
10         Arrays.sort(b);
11         System.out.println(Arrays.toString(b));
12 
13         //Arrays.binarySearch()
14         int[] c = {18,62,68,82,65,9};
15         Arrays.sort(c);
16         System.out.println(Arrays.binarySearch(c,65));
17 
18         //Arrays.equals()
19         int[] d = {18,62,68,82,65,9};
20         int[] e = {18,62,68,82,65,9};
21         int[] f = {18,62,68,82,65,8};
22         System.out.println(Arrays.equals(d,e));
23         System.out.println(Arrays.equals(d,f));
24         System.out.println(Arrays.equals(e,f));
25 
26         //Arrays.fill()
27         int[] g = new int[10];
28         Arrays.fill(g,5);
29         System.out.println(Arrays.toString(g));

输出结果如下

[I@1b6d3586
[I@1b6d3586
[1, 2, 3, 4, 5, 6]
[6, 3, 7, 1, 3, 8, 4, 3, 0, 3, 2]
[0, 1, 2, 3, 3, 3, 3, 4, 6, 7, 8]
3
true
false
false
[5, 5, 5, 5, 5, 5, 5, 5, 5, 5]