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Python Exercises

Python: Check the sum of three elements from three arrays is equal to a target value

Python Basic - 1: Exercise-11 with Solution

Write a Python program to check the sum of three elements (each from an array) from three arrays is equal to a target value. Print all those three-element combinations.

Sample data:
/*
X = [10, 20, 20, 20]
Y = [10, 20, 30, 40]
Z = [10, 30, 40, 20]
target = 70
*/

Sample Solution:

Python Code:

import itertools
from functools import partial
X = [10, 20, 20, 20]
Y = [10, 20, 30, 40]
Z = [10, 30, 40, 20]
T = 70

def check_sum_array(N, *nums):
  if sum(x for x in nums) == N:
    return (True, nums)
  else:
      return (False, nums)
pro = itertools.product(X,Y,Z)
func = partial(check_sum_array, T)
sums = list(itertools.starmap(func, pro))

result = set()
for s in sums:
    if s[0] == True and s[1] not in result:
      result.add(s[1])
      print(result)

Sample Output:

{(10, 20, 40)}
{(10, 20, 40), (10, 30, 30)}
{(10, 20, 40), (10, 30, 30), (10, 40, 20)}
{(10, 20, 40), (10, 30, 30), (20, 10, 40), (10, 40, 20)}
{(10, 20, 40), (20, 20, 30), (10, 30, 30), (20, 10, 40), (10, 40, 20)}
{(10, 20, 40), (10, 40, 20), (20, 10, 40), (10, 30, 30), (20, 20, 30), (20, 30, 20)}
{(10, 20, 40), (10, 40, 20), (20, 10, 40), (20, 40, 10), (10, 30, 30), (20, 20, 30), (20, 30, 20)}

Flowchart:

Flowchart: Python - Check the sum of three elements from three arrays is equal to a target value

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