public class Pattern {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j + " ");
}
System.out.println();
}
}
}
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
j
followed by a space for each column, and the outer loop adds a newline character at the end of each row.