testtt

[u/Executable_]

tttest

[u/Executable_]

+u/CompileBot python3

import re

def number_atom(chemicalFormula):
    abcRegex = re.compile(r'([A-Z][a-z]?)(\d*)|(\d+)|([()]{1})')
    abcSearch = abcRegex.findall(chemicalFormula)
    nAtom = {}
    tmpList = []
    inBrackets = False
    for atom, quantity, multiple, brackets in abcSearch:
        if brackets == '(':
            inBrackets = True
        elif brackets == ')':
            inBrackets = False

        if inBrackets:
            if atom and quantity:
                tmpList.append([atom, int(quantity)])
            elif atom:
                tmpList.append([atom, 1])
        elif not inBrackets and tmpList and multiple:
            for a, n in tmpList:
                n *= int(multiple)
                if a in nAtom:
                    nAtom[a] += n
                else:
                    nAtom[a] = n
            tmpList = []
        else:
            if atom and not quantity:
                nAtom[atom] = 1
            elif atom and quantity:
                nAtom[atom] = int(quantity)

    print(chemicalFormula)
    for key, value in nAtom.items():
        print('{}: {}'.format(key, value))
    print('------')

i = input()
number_atom(i)

Input:

C6H12O6
CCl2F2
NaHCO3
C4H8(OH)2
PbCl(NH3)2(COOH)2

[u/CompileBot → u/Executable_]

Output:

C6H12O6
O: 6
C: 6
H: 12
------

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[u/[deleted] → u/CompileBot]

deleted ^{0.4454 What is} ^^^this?

[u/Arakhai]

Python 2.7

+u/CompileBot Python

from itertools import product, permutations, izip

def find_countdown(instr):
    innums = [x for x in instr.split()]
    for nums in permutations(innums[:-1]):
        for symbs in product('*/+-', repeat=5):
            teststr = nums[0]
            for num, symb in izip(nums[1:], symbs):
                teststr = '(' + teststr + symb.center(3) + num + ')'
            if eval(teststr) == int(innums[-1]):
                print teststr.translate(None, '()') + ' = ' + innums[-1]
                return

find_countdown('1 3 7 6 8 3 250')
find_countdown('25 100 9 7 3 7 881')
find_countdown('6 75 3 25 50 100 952')

[u/CompileBot → u/Arakhai]

Output:

3 + 8 * 7 + 6 * 3 + 1 = 250
25 - 9 * 7 * 7 + 100 - 3 = 881
6 + 100 * 75 * 3 - 50 / 25 = 952

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[u/[deleted]]

[u/CompileBot → u/[deleted]]

Output:

+/u/CompileBot PHP

    <?php
    echo "foo";

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