Minimum sum formed by digits
Detailed guide and Python implementation for the 'Minimum sum formed by digits' problem.
Problem Statement
Write a function min_sum_digits(arr) that takes a list of single-digit integers arr (0-9) and returns the minimum sum of two numbers formed by using all the digits in the array.
- •2 <= len(arr) <= 30
- •0 <= arr[i] <= 9
Examples
min_sum_digits([6, 8, 4, 5, 2, 3])
604
The minimum sum is obtained by forming the numbers 246 and 358: 246 + 358 = 604.
min_sum_digits([5, 3, 0, 7, 4])
82
The minimum sum is obtained by forming the numbers 35 and 47 (or 047): 35 + 47 = 82.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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