Question

1. (SubtractionTable.java) Write a program that displays the following subtraction table.

Notes: You must use a nested loop. There are spaces at the beginning of each row.

                                                                                                                2 - 1 = 1  

                                                                                                3 - 1 = 2   3 - 2 = 1  

                                                                                4 - 1 = 3   4 - 2 = 2   4 - 3 = 1  

                                                                5 - 1 = 4   5 - 2 = 3   5 - 3 = 2   5 - 4 = 1  

                                                6 - 1 = 5   6 - 2 = 4   6 - 3 = 3   6 - 4 = 2   6 - 5 = 1  

                                7 - 1 = 6   7 - 2 = 5   7 - 3 = 4   7 - 4 = 3   7 - 5 = 2   7 - 6 = 1  

                8 - 1 = 7   8 - 2 = 6   8 - 3 = 5   8 - 4 = 4   8 - 5 = 3   8 - 6 = 2   8 - 7 = 1  

9 - 1 = 8   9 - 2 = 7   9 - 3 = 6   9 - 4 = 5   9 - 5 = 4   9 - 6 = 3   9 - 7 = 2   9 - 8 = 1

Answer 1

//Create class SubstractionTable.java

public class SubstractionTable {
void printSubstractionTable()
{
//nested loop to display substraction table
int rows=10;
for(int i=2;i<rows;i++)
{
for (int j =1; j < rows-i; j++) {
System.out.print(" ");
}
for(int j=1;j<i;j++)
{
   System.out.print(i+"-"+j+"="+(i-j)+" ");//print the table
}
System.out.println(" ");//new line after completion of inner loop
}
}
public static void main(String[] args) {
SubstractionTable sc=new SubstractionTable();
sc.printSubstractionTable();
}
}
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