Java program to print the following pattern on the console

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

Algorithm:

• STEP 1: START
• STEP 2: SET lines=10
                SET i=1
• STEP 3: REPEAT STEP 4 to 15 UNTIL i<=lines
• STEP 4: SET count =0
                SET j=1
• STEP 5: REPEAT STEP 6 and 7 UNTIL j
• STEP 6: IF count is less than (i-1)
                IF j is not less than (lines-i+1)
                PRINT j AND INCREMENT count by 1
• STEP 7: SET j=j+1
• STEP 8: PRINT 0
• STEP 9: SET count =0
• STEP 10: DECREMENT j by 1
• STEP 11: REPEAT STEP 12 and 13 UNTIL j is greater than 0
• STEP 12: IF count is less than (i-1)
                PRINT j AND INCREMENT count by 1
• STEP 13: SET j = j - 1
• STEP 14: PRINT new line
• STEP 15: i = i + 1
• STEP 16: END

Program:

Output:

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321