Java 偶数序列生成

Java 偶数序列生成

以下是几种在 Java 中生成偶数序列的方法：

1. 使用 for 循环生成指定范围内的偶数

java

public class EvenNumbers {

public static void mainargs) {

int start = 2;

int end = 20;

System.out.println("偶数序列: ");

for (int i = start; i <= end; i += 2) {

System.out.print(i + " ");

2. 使用 while 循环生成偶数序列

java

public class EvenNumbers {

public static void main(String[] args) {

int start = 2;

int end = 20;

int current = start;

System.out.println("偶数序列: ");

while (current <= end) {

System.out.print(current + " ");

current += 2;

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3. 生成前 N 个偶数

java

public class EvenNumbers {

public static void main(String[] args) {

int count = 10; // 生成前10个偶数

System.out.println("前" + count + "个偶数: ");

for (int i = 1; i <= count; i++) {

System.out.print(2 * i + " ");

4. 使用 Java 8 Stream API 生成偶数序列

java

import java.util.stream.IntStream;

public class EvenNumbers {

public static void main(String[] args) {

int start = 2;

int end = 20;

System.out.println("使用Stream的偶数序列: ");

IntStream.iterate(start, n -> n + 2)

.limit((end - start) / 2 + 1)

.forEach(n -> System.out.print(n + " "));

5. 生成无限偶数序列（使用迭代器）

java

import java.util.Iterator;

import java.util.stream.Stream;

public class EvenNumbers {

public static