在调用Arrays.sort()对数组进行排序时,默认是升序排序的,如果想让数组降序排序,有下面两种方法: 1.Collections的reverseOrder ? 1 2 3 4 5 6 7 8 9 10 11 12 import java.util.*; public class Main { public static void main(String[] args) { // 注意这里是Integer,不是int Integer[] arr={9,...
步骤 代码实现 importjava.util.Arrays;importjava.util.Comparator;publicclassArraySortReverse{publicstaticvoidmain(String[]args){// Step 1: Declare an integer arrayInteger[]arr={5,2,8,1,3};// Step 2: Use Arrays.sort method to sort the array in reverse orderArrays.sort(arr,newComparator<Inte...
String[] strArray = new String[] {"z", "a", "C"}; Arrays.sort(strArray); 输出: [C, a, z] 3. 严格按字母表顺序排序,也就是忽略大小写排序 Case-insensitive sort Arrays.sort(strArray, String.CASE_INSENSITIVE_ORDER); 输出: [a, C, z] 4. 反向排序, Reverse-order sort Arrays.sort(...
Arrays.copyOfRange(int[]original,intfrom,intto)// from 表示开始位置, to 表示结束位置//复制下标为:[from,to) Arrays.sort()降序排序 不能对基本数据类型(int、double...)进行逆序排序 Arrays.sort(a,Collections.reverseOrder());
5. 忽略大小写反向排序 Case-insensitive reverse-order sort Arrays.sort(strArray, String.CASE_INSENSITIVE_ORDER); Collections.reverse(Arrays.asList(strArray)); 输出: [z, C, a] 对于整数、字符串排序,jdk提供了默认的实现,如果要对一个对象数组排序,则要自己实现java.util.Comparator接口。
Java的Arrays.sort()仅支持对引用数据类型进行自定义排序,如果是基本数据类型(如int类型),将无法使用Comparator进行自定义排序。 可以先正序再reverse int[] nums =newint[]{1,6,4,55,61,3,5,8,4,2,8,15,61,33}; Arrays.sort(nums);for(inti=0; i < nums.length/2; i++) {inttemp=nums[i];...
(str));1011Arrays.sort(str);//对数组进行排序1213System.out.println(".toString=" + Arrays.toString(str));//打印排序后数组中所有数据14System.out.println(".asList=" +Arrays.asList(str));1516Arrays.sort(str, Collections.reverseOrder());//对数组进行 倒序1718System.out.println(".toString="...
}// create a comparatorComparator<Short> comp = Collections.reverseOrder();// sorting array with reverse order using comparator from 0 to 2Arrays.sort(sArr,0,2, comp);// let us print all the elements available in listSystem.out.println("short array with some sorted values(1 to 4) is:...
reverse()Reverses the order of the list sort()Sorts the list Note:Python does not have built-in support for Arrays, but Python Lists can be used instead. Exercise? Python Lists can be used as arrays. What will be the result of the following code: ...
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