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Special Property Numbers:
Eg--> You have a number 8987656 or 4565676
The difference between consecutive numbers is either 1 or -1.

You are given a range, you need to print the numbers with this special property.

This is on Additive Number Property

Additive Number examples:
123459 (1+2=3, 4+5=9)
314538 (3+1=4, 5+3=8)
122436 (12+24=36)

You are given a range, you need to print all the additive numbers.

You are given a 2-D array with same number of rows and columns. You have to determine the longest snake in the array. The property to find the snake is the difference between the adjacent(left, right, up or down) should be either 1 or -1. If there are more than one snakes with maximum length, the output should print both of them.

Example-->

The given array elements are as follows:

4 7 9 8
5 6 5 4
6 7 8 5
10 9 7 6

The longest snakes are 7->6->5->4->5->6 and 7->6->7->6->5->4

How to modify the file content using Java?
For eg--> I have a file that contains following data
1,21,Azhar
2,22,Ali
3,34,ABC
4,123,XYZ
.....
I want to modify the content of this file to:
1,Azhar
2,Ali
3,ABC
4,XYZ

How can I redirect the output obtained on console to a new file using JAVA?