VB/Javasript programming Help! Can anyone solve this question for me?

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Hello there..is anyone can answer my question here? or guide me in finding solution? i hope to get response from you all..Thanks alot Question: Write a Java Scrip/VB script and a servlet on the following: A. The Jsp should allow the user to enter a lost of alphabet and post it to a servlet. B. The servlet will return the number of occurance of each alphabet in a table order by the number of occurance. Please do the sorting of the occurance in descending order. Example. If user enter ABBZZZBZA, the list display should be: |Z|B|A| |4|3|2| *it will display in a table