Arrays:

Based on the following code segment and method, what does

mysteryMethod do and what is the output produced?

int $[]a=\{10,3,90,3\}$;

System.out.println$($mysteryMethod$($a$))$;

int $[]b=\{\}$;

System.out.println$($mysteryMethod$($b$))$;

public static int mysteryMethod$($int$[]$ a$)\{$

int $t=0$;

for $($int $i=0$;$i$ a$.$length; $i++)\{$

$t+=a[i]$;

$\}$

return t;

$\}$

Returns a sum of list; $0$ if list empty

Output:

$106$

$0$

Uses an array to accumulate the number of numbers on the file that end in a specific digit, where

location $0$ is for numbers ending in a $0$ ; location $1$ for numbers ending in a $1,$ etc. up to location $9$

signifying numbers ending in a $9$

Output:

$1,1,2,1,2,1,0,0,0,0$

Prints the last index of the element to be found; if element not in the list, returns $-1$

Output:

$3$

$-1$

Returns list minimum

Output:

$3$

$1$