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Form Smallest Number From Two Digit Arrays
Construct the smallest positive integer that includes a digit from nums1 and a digit from nums2. Each array contains distinct digits from 1 through 9. A digit common to both arrays can satisfy both requirements by itself. Practice approach: If the arrays intersect, return their smallest common digit. Otherwise take the smallest digit from each array and place the smaller one in the tens position. Any two-digit result is larger than a common single digit. A set or nine-slot presence table gives O(n + m) time with constant auxiliary space.
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Problem Statement
Construct the smallest positive integer that includes a digit from nums1 and a digit from nums2. Each array contains distinct digits from 1 through 9. A digit common to both arrays can satisfy both requirements by itself. Practice approach: If the arrays intersect, return their smallest common digit. Otherwise take the smallest digit from each array and place the smaller one in the tens position. Any two-digit result is larger than a common single digit. A set or nine-slot presence table gives O(n + m) time with constant auxiliary space.
Source: Form Smallest Number From Two Digit Arrays on LeetCode. Use the original task for its coding environment and submissions.
Form Smallest Number From Two Digit Arrays
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Examples
# Example 1
nums1 = [4,1,3], nums2 = [5,7]
15
# Example 2
nums1 = [3,5,2,6], nums2 = [3,1,7]
3
Constraints
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