How to use foreach or enhanced for loop for multidimensional array in java?

Question

Is foreach for loop is only for one dimensional array? if not please explain how can i change the for loop in enhanced or foreach loop in the code below

class Kevil{
public static void main(String[] args){

    int[][] num={{1,2,3,4,5,6,7,8,9,10},{11,12,13,14,15,16,17,18,19,20},{21,22,23,24,25,26,27,28,29,30}};

    for(int i = 0;i<num.length;i++) {
        for(int j =0 ;j<num[i].length;j++){
            System.out.print(num[i][j]);
            System.out.print(" ");
        }
        System.out.print("\n");
    }

}
}

DudeDoesThings · Accepted Answer · 2018-11-30 17:49:00Z

2

Each element of your num array is an int array itself. If you want a for-each loop you will have to use int[] as a type for the loop variable.

class Kevil{
public static void main(String[] args){

int[][] num={{1,2,3,4,5,6,7,8,9,10},{11,12,13,14,15,16,17,18,19,20},{21,22,23,24,25,26,27,28,29,30}};

for(int[] i : num) {
    for(int j : i){
        System.out.print(j);
        System.out.print(" ");
    }
    System.out.print("\n");
}

}
}

answered Nov 30, 2018 at 17:49

DudeDoesThings

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Comments

nitowa · Accepted Answer · 2018-11-30 17:48:14Z

0

like so?

for(int[] row : num){
   for(int element : row){
     //do something with element
   }
}

answered Nov 30, 2018 at 17:48

nitowa

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