Index2max+1
假
Index2-Index2+1
hash[number]=1
Index2-0max-findMax(a)newArr-{}
hash[number]==undefind
真
star
a-一个数组，hash-{}Index-0
newArr.push(Index2)countIndex-countIndex+1
Index-Index+1
end
countIndex-0
count!=undefind
number-a[index]
Indexa['length']
hash[number]-hash[number]+1
count-hash[Index2]
countIndexcount
