如何将单个对象[]传递给params对象[]

const singleObject = [1, 2, 3];
const paramsObject = [4, 5, 6];
const combinedArray = singleObject.concat(paramsObject);

single_object = [1, 2, 3]
params_object = [4, 5, 6]
combined_list = single_object + params_object

int[] singleObject = {1, 2, 3};
int[] paramsObject = {4, 5, 6};
int[] combinedArray = new int[singleObject.length + paramsObject.length];
System.arraycopy(singleObject, 0, combinedArray, 0, singleObject.length);
System.arraycopy(paramsObject, 0, combinedArray, singleObject.length, paramsObject.length);

int[] singleObject = {1, 2, 3};
int[] paramsObject = {4, 5, 6};
int[] combinedArray = new int[singleObject.Length + paramsObject.Length];
Array.Copy(singleObject, 0, combinedArray, 0, singleObject.Length);
Array.Copy(paramsObject, 0, combinedArray, singleObject.Length, paramsObject.Length);