Write a function named$$hasSingleMaximum$$that takes an array argument and returns $1$ if the maximum value in its array argument occurs exactly once in the array, otherwise it returns $0.$

N$.$B: you are writing in Java the function signature is

int hasSingleMaximum$($int$[]$ a$)$

Examples

if a is return reason

$\{1,2,3,1,0\}1$ because the maximum value $3$ occurs only once in the array

$\{18\}1$ because the maximum value $18$ occurs exactly once in the array

$\{1,2,3,0,1,3\}0$ because the maximum value $3$ occurs twice in the array

$\{13,1,13,2,13,0,13,1,13\}0$ because the maximum value $13$ occurs more than once in the array

$\{\}0$ because there is no maximum value

$\{-6,-6,-6,-6,-6,-6,-6\}0$ because the maximum value $-6$ occurs more than once in the array