Finding Max value from an array

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# 1  
Old 07-31-2009
Finding Max value from an array


I need to find max and second max element from an array.
array contains 0338,0337,0339,0340,0401,0402,0403
# 2  
Old 07-31-2009
Post what you had tried so far.
# 3  
Old 07-31-2009
typeset currel_max=0

for i in `echo ${array[*]}`
if [ $currel_max -lt $i ]

so was succesful in finding max value. but want to find second max value.

Also want to know if there is any other way to find.. instead of using for loop.
# 4  
Old 07-31-2009
Thanks for posting what you have tried Smilie

One more variable and keep flipping - but not efficient

awk 'BEGIN{ max = -1; second_max = -1 }{ if ( $0 > max ) { second_max = max; max = $0 } }END{ print second_max }' file

# 5  
Old 07-31-2009
As an alternative:

set -A MyArray 0338,0337,0339,0340,0401,0402,0403
echo ${MyArray[@]} | awk -v RS="," '1' | sort -r | head -2


# 6  
Old 07-31-2009
use sort -nr
'n' will take care to sort it numerically
# 7  
Old 07-31-2009
Leading 0's will take care of that...
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