\documentclass[a4paper,10pt]{article} 
\begin{document} 
\begin{table}[H!] 
\centering 
\begin{tabular}{|c|c|c|c|c|c|c|} 
\hline 
  & rank steps & min-iters & max-iters & mean-iters & max-cos & max rank \\ 
\hline 
r=19 & 2 & 70 & 88 & 79 & 8.675098e-01 & 225 \\ 
\hline 
\end{tabular} 
\caption{Using AP algorithm; with [m n k mn toler iterlimit]= [15             15             11            225          1e-14           3500]; max/min/mean iter and number rank steps for finding max-rank of P} 
\label{table:table:maxitermaxrankP} 
\end{table} 
\end{document}