How to filter 2D array in Flex and perform computation based on Filtering

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i have array follows:

asia     india   calcutta 100 200 
asia     india   chennai  200 400 
asia     india   mumbai   100 300 
asia     pak     xxxxxx   100 300
asia     pak     ssssss   200 100 
americas canada  ottawa   200 200 
americas canada  toronto  120 200 
americas mexico  sonoro   110 500

i need filter above dataset calculating sum of each region use of specific filter such region name given.(eg. asia)

output filter asia must give me :

india   400 900 
pak     300 400

how possible in flex array 2d.

use example array input function , create second array output.

 

loop through first array finding unique country names filter region, each country name, sum entries country, add row country output array.



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