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Put the result of each thread into a linked-list. Using another thread , add the linked-list nodes deleting the nodes as it gets summed and then put the result in another node.
- karkareshashank October 14, 2013At the end of first summing phase there will be only one node in the linked-list containing the intermediate sum . Continuing the same process till we have only 1 node in the list for 3-5 times with same value.