Discussion on: Daily Challenge #167 - Return String As Sorted Blocks

[Andrei McMillan]

python

import re

def sorted_blocks(input_str):
    str_usage = {}
    arr_list = {}

    upper_case = re.findall('[A-Z]', input_str)
    lower_case = re.findall('[a-z]', input_str)
    numbers = re.findall('[0-9]', input_str)

    upper_case.sort()
    lower_case.sort()
    numbers.sort()

    for dataset in [lower_case, upper_case, numbers]:

        for item in dataset:
            if str_usage.get(item) is not None:
                str_usage[item] += 1
            else:
                str_usage[item] = 1

            index = str_usage[item]

            arr_list.setdefault(index, '')
            arr_list[index] += item

    print 'input    : "' + input_str + '"'
    print 'block(s) : "' + '-'.join(arr_list.values()) + '"'
    print ' '

# tests
sorted_blocks('21AxBz')
sorted_blocks('21BxAzAasfdaXZas')
sorted_blocks('abacad')
sorted_blocks('')

# output

# input    : "21AxBz"
# block(s) : "xzAB12"
# 
# input    : "21BxAzAasfdaXZas"
# block(s) : "adfsxzABXZ12-asA-a"
# 
# input    : "abacad"
# block(s) : "abcd-a-a"
# 
# input    : ""
# block(s) : ""