print values in custom format in AWK

Question

How do I align min and max values shown below

Program

{
    for(i = 1; i <= NF; i++)
    {
    a[i] = $i;
    if (min[i]==""){  min[i]=$i;} #line1
    if (max[i]==""){  max[i]=$i;} #line2
    if ($i<min[i]) {  min[i]=$i;}     #line3
    if ($i>max[i]) {  max[i]=$i;}     #line4
    }
print $0;

}
END {
OFS="\n";
for(j = 1; j <= NF; j++)
        {   
        print min[j],max[j];        
        }
}

Dataset

4 14 24 34
3 13 23 33 
1 11 21 31
2 12 22 32
5 15 25 35

Current Output

4 14 24 34
3 13 23 33 
1 11 21 31
2 12 22 32
5 15 25 35
1
5
11
15
21
25
31
35

Output I need

4 14 24 34
3 13 23 33 
1 11 21 31
2 12 22 32
5 15 25 35
1 11 21 31  ->   Min Values(for that field)
5 15 25 35  ->   Max Values(for that field)

Answer 1

You need to loop twice, once for the min, once for the max:

END {
    for(j = 1; j <= NF; j++) printf "%d ", min[j]
    print ""
    for(j = 1; j <= NF; j++) printf "%d ", max[j]
    print ""
}