CODE EXAMPLE FOR PYTHON

Python find permutations of operators between each digit in a given string of digits will result in a particular answer

from itertools import permutations,combinations_with_replacement
numbers   = ["1","1","1","8"]
target    = 10
operators = ["+","-","*","/"]
seen      = set()
for values in permutations(numbers,len(numbers)):
    for operCombo in combinations_with_replacement(operators,len(numbers)-1):
        for oper in permutations(operCombo,len(numbers)-1):
            formula = "".join(o+v for o,v in zip([""]+list(oper),values))
            if formula not in seen and eval(formula) == target:
                print(formula,"=",target)
                seen.add(formula)