Find The Sum of Uncommon Numbers Given two integer arrays input1[ ] and input2[], extract the numbers which are present only in

Question

Find The Sum of Uncommon Numbers
Given two integer arrays input1[ ] and input2[],
extract the numbers which are present only in any one of the array (uncommon numbers).
Calculate the sum of those numbers. Lets call it sum1 and calculate single digit sum of
sum1,
i.e keep adding the digits of sum1 until you arrive at a single digit.
Return that single digit as output.
Note:
1.Array size ranges from 1 to 10.
2.All the array elements are positive numbers.
3.Atleast one uncommon number will be present in the arrays.
Example-1
input1: { 123, 45, 7890, 67, 2, 90 }
input2: { 45, 7890, 123 }
output:
67 + 2 + 90 = 159
1 + 5 + 9 => 15
1 + 5 => 6
Example-2
input1: {6, 7, 12, 70, 44}
input2: {8, 6, 70, 44}
output:
7 + 12 + 8 => 27
2 + 7 => 9

Answer 1

You should really show your attempt first...

There would be many ways to acheive the same thing (especially between languages and libraries).

Here’s a quick/simple way using Python:

listOne = [123, 45, 7890, 67, 2, 90]
listTwo = [45, 7890, 123]

notBoth = set(listOne).symmetric_difference(set(listTwo))

summed = str(sum(notBoth))

while len(str(summed)) > 1:
tmp = 0
for i in summed:
tmp += int(i)
summed = str(tmp)

print(summed)

Answer 2

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Answer 3

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