Shell Programming and Scripting

I want join 2 files with range of numbers in ascending order according to the value of the numbers the input will be like this

INPUT

file1
column1 column2
10 14
20 25
56 58
83 90
FILE 2
column1 column 2
1 2
2 8
10 14
20 24
50 58
60 63
70 76
80 100

OUTPUT
col1 col2 col3 col4
1 2
2 8
10 14 10 14
20 25 20 24
56 58 50 58
70 76
83 90 80 100

I want join 2 files with range of numbers in ascending order according to the value of the numbers the input will be like this

INPUT

file1
column1 column2
10 14
20 25
56 58
83 90
FILE 2
column1 column 2
1 2
2 8
10 14
20 24
50 58
60 63
70 76
80 100

OUTPUT
col1 col2 col3 col4
1 2
2 8
10 14 10 14
20 25 20 24
56 58 50 58
70 76
83 90 80 100

Help would be appreciated

any help would be appreciated

If you search the forum one of your colleague just ask a similar question few days ago

Hey guys I would like to know how to find nearest numbers based on second column in 1st column some thing like this

Input
col1 col2
10 20
30 40
48 64
55 71
70 90

output
col1 col2 col3
10 20 30
30 40 48
48 64 70
55 71
70 90

I need col 3