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]