Arrays 通过foreach循环打印一维数组
如何通过foreach循环方法打印一维数组的元素Arrays 通过foreach循环打印一维数组,arrays,static-methods,Arrays,Static Methods,如何通过foreach循环方法打印一维数组的元素 public class SingleArrayPrac { public static void main(String[] args) { int[] array = { 1, 2, 3, 4 }; // for(int row : array) This way i can print array but i want to print through method, How?
public class SingleArrayPrac {
public static void main(String[] args) {
int[] array = { 1, 2, 3, 4 };
// for(int row : array) This way i can print array but i want to print through method, How?
// System.out.println(row);
for (int print : array) {
printRow(print);
}
}
public static void printRow(int row) {
for (int print : row) { // Error at Row
System.out.println(print);
}
}
}
请阅读以下代码中的注释进行解释:
public class SingleArrayPrac {
public static void main(String[] args) {
int[] array = { 1, 2, 3, 4 };
/*
Here print variable will hold the next array element in next iteration.
i.e in first iteration, print = 1, in second iteration print = 2 and so on
*/
for (int print : array) {
//You pass that element to printRow
printRow(print);
}
}
public static void printRow(int row) {
//This will print the array element received.
System.out.println(print);
}
}
另一种解决方案可以是:
public class SingleArrayPrac {
public static void main(String[] args) {
int[] array = { 1, 2, 3, 4 };
printRow(array); //Here you pass the whole array to printRow
}
public static void printRow(int[] row) {
/*
The array is received in row variable and than each element of the array is printed.
*/
for (int print : row) {
System.out.println(print);
}
}
}
问题在于声明printRow方法的位置。在应该传递int[]数组的位置传递int。这会导致错误,因为您尝试的变量不是数据集合。它应该这样做:
public static void printRow(int[] row) {
for (int print : row) {
System.out.println(print);
}
}
现在,当您要打印数组时,只需调用printRow(array),其中array是int[]。在printRow方法中,row是整数,您希望如何迭代整数?您只需要打印参数。
printRow
方法中的row
变量已经包含数组元素。因此,您只需使用println
在printRow
中打印row
,