Build largest number from numbers

def sortStringByLength(str1, str2):
    str1Len = len(str1)
    str2Len = len(str2)
    if(str1Len > str2Len):
        return [str1, str2]
    else:
        return [str2, str1]

def getStringToLength(str1, length):
        if(len(str1)==length):
            return str1
        else:
            return str1 + str1[-1] * (length - len(str1))

def getStringVal(pStr1, pStr2):
    l = sortStringByLength(pStr1, pStr2)
    val = int(l[0])
    val2 = int(getStringToLength(l[1], len(l[0])))

    if(val > val2):
        return l[0]
    else:
        return l[1]

def getNextMaxString(strings):
    maxString = strings[0]
    for otherString in strings:
        if(maxString!=otherString):
            maxString = getStringVal(maxString, otherString)
    return maxString

def getMaxStrings(strings):
    mstrings = []
    while(len(strings)>0):
        tStr = getNextMaxString(strings)
        strings.remove(tStr)
        mstrings.append(tStr)

    res = ""
    for s in mstrings:
        res = res +" "+ s
    return res