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Problem
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Problem: Phone Number Prefix

med
30 min
Try to solve the Phone Number Prefix problem.

Statement

Given an array of strings numbers, determine if any phone number is a prefix of another phone number in the array.

Return true if no phone number in numbers is a prefix of any other phone number, and false otherwise.

Constraints:

  • 2≤2 \leq numbers.length ≤50\leq 50

  • 1≤1 \leq numbers[i].length ≤50\leq 50

  • numbers[i] consists only of digits from ′0′'0' to ′9′'9'.

⋮
Tap here to switch tabs
Problem
Submissions

Problem: Phone Number Prefix

med
30 min
Try to solve the Phone Number Prefix problem.

Statement

Given an array of strings numbers, determine if any phone number is a prefix of another phone number in the array.

Return true if no phone number in numbers is a prefix of any other phone number, and false otherwise.

Constraints:

  • 2≤2 \leq numbers.length ≤50\leq 50

  • 1≤1 \leq numbers[i].length ≤50\leq 50

  • numbers[i] consists only of digits from ′0′'0' to ′9′'9'.