please determine running time function T$($n$)$ for the code : for$($int i$=1$;i$<=$n;i$++)\{$

for$($int j$=1$;j$<2*$i;j$++)\{$

k $=$ j;

while$($k$>=0)\{$

k $=$ k $1$;

$\}$

$\}$

$\}$