Following code successfully reverses prices vector.

for $($i $=0$; i $<($prices$.$size$()/2)$; $++$i$)\{$

tmp $=$ prices.at$($i$)$;

prices.at$($prices$.$size$()-$ i $-1)=$ tmp;

prices.at$($i$)=$ prices.at$($prices$.$size$()-1-$ i$)$;

$\}$

Following code successfully reverses prices vector.

for $($i $=0$; i $<($prices$.$size$()/2)$; $++$i$)\{$

tmp $=$ prices.at$($i$)$;

prices.at$($prices$.$size$()-$ i $-1)=$ tmp;

prices.at$($i$)=$ prices.at$($prices$.$size$()-1-$ i$)$;

$\}$

True

False