Java 合并数组：combineArrays 方法实现详解

以下是实现上述需求的 Java 代码：\n\njava\npublic class Main {\n public static void main(String[] args) {\n int[] arr1 = {1, 2};\n int[] arr2 = {3, 4};\n \n int[] result = combineArrays(arr1, arr2);\n \n for (int num : result) {\n System.out.print(num + " ");\n }\n }\n \n public static int[] combineArrays(int[] arr1, int[] arr2) {\n int length1 = arr1.length;\n int length2 = arr2.length;\n int length = length1 + length2;\n \n int[] result = new int[length];\n \n for (int i = 0; i < length1; i++) {\n result[i] = arr1[i];\n }\n \n for (int i = 0; i < length2; i++) {\n result[length1 + i] = arr2[i];\n }\n \n return result;\n }\n}\n\n\n输出结果为：1 2 3 4