找出面积最大的矩形

def solution(line):
    nums=list(map(int,line.split(‘,‘)))

    def getMaxArr(arr,number):
        s=[]

        if len(arr)==0:
            return 0
        for i in range(len(arr)):
            if (i==0 or arr[i-1]<number) and arr[i]>=number:
                s.append([i,0])
            if i==len(arr)-1 or (arr[i-1]>=number and arr[i]<number):
                if len(s)>0:
                    if i==len(arr)-1 and arr[i]>=number:
                        s[-1][1]=i+1
                    else:
                        s[-1][1]=i
        are=0
        for i in s:
            are=max(are,max(len(arr[i[0]:i[1]])*number,getMaxArr(arr[i[0]:i[1]],number+1)))
        return are


    return getMaxArr(nums,1)