Need to do the this also like past one

Description

a. Write a Java program to convert numbers (written in base 10 as usual) into octal (base 8) without using an array and without using a predefined method such as Integer.toOctalString() .

Example 1: if your program reads the value 100 from the keyboard it should print to the screen the value 144 as 144 in base 8=1*8^2+4*8+4=64+32+4=100

Example 2: if your program reads the value 5349 from the keyboard it should print to the screen the value 12345

b. Write a Java program to display the input number in reverse order as a number.

Example 1: if your program reads the value 123456 from the keyboard it should print to the screen the value 654321

Example 2: if your program reads the value 123400 from the keyboard it should print to the screen the value 4321 (NOT 004321)

c. Write a Java program to display the sum of digits of the input number as a single digit. If the sum of digits yields a number greater than 10 then you should again do the sum of its digits until the sum is less than 10, then that value should be printed on the screen.

Example 1: if your program reads the value 123456 then the computation would be 1+2+3+4+5+6=21 then again 2+1=3 and 3 is printed on the screen

Example 2: if your program reads the value 122400 then the computation is 1+2+2+4+0+0=9 and 9 is printed on the screen.

Explanation & Answer:

Worksheet

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