function [chosenrow,chosencol]=recursive_search_for_balanced_bootstrap(ordered_array,num_bootstrap_runs,len)

candidaterow=ceil(rand*num_bootstrap_runs);
candidatecol=ceil(rand*len);
 if ~isnan(ordered_array(candidaterow,candidatecol))
     chosenrow=candidaterow;
     chosencol=candidatecol;
 else
      [chosenrow,chosencol]=recursive_search_for_balanced_bootstrap(ordered_array,num_bootstrap_runs,len);
end