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...
{ 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){ swap(nums, begin++, e...
Basic Java Program to Reverse anintArray In this first example, we take the size of array and the elements of array as input. We consider a functionreversewhich takes the array (here array) and the size of an array as the parameters. Inside the function, we initialize a new array. The...
ArrayReverse.java 代码语言:javascript 代码运行次数:0 运行 AI代码解释 arr {11,22,33,44,55,66} {66, 55,44,33,22,11} 方式1:通过找规律反转 【思路分析】 规律1. 把 arr[0] 和arr[5] 进行交换 {66,22,33,44,55,11} 2. 把 arr[1] 和arr[4] 进行交换 {66,55,33,44,22,11} 3. ...
使用StringBuilder 或者 stringBuffer 的 reverse() 方法。 示例代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // StringBuffer reverseStringBuffer stringBuffer=newStringBuffer();stringBuffer.append("abcdefg");System.out.println(stringBuffer.reverse());// gfedcba// StringBuilder reverseStringBuilde...
Learn how to reverse or invert an array in Java. A reversed array is of equal size to the original array and contains the same items but in the reverse order. String[] array = {"A", "B", "C", "D", "E"}; String[] reveresedArray = {"E", "D", "C", "B", "A"}; 1...
Java Program to reverse the Array Sort an Array in Descending (Reverse) Order – Java Java Program to Reverse a String using Recursion Java Program to print number of elements in an array Top Related Articles: Java Program to Calculate average using Array ...
案例3:反转数组:Arrays没有反向方法。我们可以使用 Collections.reverse() 来反转数组,如下所示: 示例 Java // Java program to Illustrate Reversal of Array// usingreverse() method of Collections class// Importing utility classesimportjava.util.*;// Main classpublicclassGFG{// Main driver methodpublic...
class, rows); 2 Double[][] arraymn = (Double[][]) Array.newInstance(Double.class, rows, cols); 2,Array.set()和Array.get() 可以通过Array.set()和Array.get()进行数组元素的取值和写入,可以操作引用类型数组,也可以操作基本类型数组。 set和get方法如下: 1 public static native void set(Object...
s.reverse();//翻转字符序列 s.delete(int startIndex,int endIndex);//从当前字符序列中删除一个子字符序列(从start到end),并返回当前对象的引用 s.replace(int startIndex,int endIndex,String str);//将从start到end的序列换成str (二)关于时间与日期 Date类 //时间显示 Date nowTime = new Date();...