how to print a 2d array in java
for (int row = 0; row < arr.length; row++)//Cycles through rows
{
for (int col = 0; col < arr[row].length; col++)//Cycles through columns
{
System.out.printf("%5d", arr[row][col]); //change the %5d to however much space you want
}
System.out.println(); //Makes a new row
}
//This allows you to print the array as matrixjava print 2d array as table
static void debugV2(Object... obj) {
System.out.println(Arrays.deepToString(obj)
.replace("],", "\n").replace(",", "\t")
.replaceAll("[\\[\\]]", " "));
}
static void debug(Object... obj) {
System.err.println(Arrays.deepToString(obj).replace("], ", "]\n"));
}2d array length in java
public static void main(String[] args) {
int[][] foo = new int[][] {
new int[] { 1, 2, 3 },
new int[] { 1, 2, 3, 4},
};
System.out.println(foo.length); //2 // gives count of rows
System.out.println(foo[0].length); //3 // gives count of columns for particular row
System.out.println(foo[1].length); //4
}Copyright © 2021 Codeinu
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