reverse an ArrayList // using ListIterator import java.io.*; import java.util.*; // Creating a class class ReverseArrayListClass { // ListIterator public ArrayList < Integer > reverseArrayList(ArrayList < Integer > arr_list) { // Reversing Array List for (int i = 0; i < arr_list.siz...
The easiest way to reverse the array is to use the existing APIs built for this very purpose.Collections.reverse()method is such an API. This method reverses the elements in a list, so we must convert the array into a list first by usingjava.util.Arrays.asList(array)and then reverse th...
方法二:使用Collections工具类实现数组反转 publicvoidreverseArray(int[]arr){List<Integer>list=Arrays.stream(arr).boxed().collect(Collectors.toList());Collections.reverse(list);for(inti=0;i<arr.length;i++){arr[i]=list.get(i);}} 1. 2. 3. 4. 5. 6. 7. 上面的代码示例中,我们先将数组...
int[] originArray; //原始数组 int[] reverseArray;//反转后的数组 int length = 0; //原始数组的长度 1. 2. 3. 方案一 使用java工具类java.util.Collections中的自带方法Collections.reverse() 以下是java.util.Collections.reverse()方法的声明 public static void reverse(List<?> list) 1. 看到参数是...
That's all about how to reverse ArrayList in Java. Though you can always write your method to reverse an ArrayList, it won't be much different than how you reverse an Array in Java, it's always better to use a function from the JDK library. Why? because they are well tested for pro...
public static void main (String[] args) throws java.lang.Exception { int[] a= {1,2,4,5}; System.out.println( Arrays.toString(reverseArray(a))); } public static int[] reverseArray(int[] nums){ int begin=0; int end= nums.length -1;while(begin <end){ ...
Java Code: // Import the Arrays class from the java.util package.importjava.util.Arrays;// Define a class named Exercise11.publicclassExercise11{// The main method where the program execution starts.publicstaticvoidmain(String[]args){// Declare and initialize an integer array 'my_array1'.in...
Reversed array is: [60, 50, 40, 30, 20, 10] Using array modile Now, we will see different ways to reverse an array using array module in Python. Using a reverse() method of array object. Here, we are using reverse() method of list to reverse an array. reversed() method performs...
Q #3)List out the difference between String, StringBuilder, and StringBuffer? Answer:Given below is the difference between String, StringBuilder, and StringBuffer. Q #4)How do I convert a char to a String in Java? Answer:We can convert a character to a String using an inbuilt method “...
import java.util.List; public class ReverseString { public static void main(String args[]) { // s1 will contain the initial string. String s1 = "InterviewKickstart"; System.out.println("Initial String: " + s1); List<Character> a = new ArrayList<>(); // creating array list object ...