public static int cool$($int a$[],$ int low, int high$)$ f

int $s=0$;

if $($low $$ high$)$

int mid $=($low $+$ high$)\frac{?}{2}$;${?}^Q$

$,$ low, mid$)$;

$,$ mid $+1,$ high$)$;

$\}$

$,$ low, mid, high$)$;

$\}$

return s;

public static int sum$($int$[]$ a$,$ int low, int mid, int high$)\{$

int sum $=$;

for $($int $j=$ low; $j$ mid; $j++)$

sum $+=a[j]$;

for $($int $j=$ mid; $j$ high; $j++)$

sum $+=a[j]$;

return sum;

$\}$

Answer: