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Solution: Word Formation Using a Hash Table

Explore how to use a hash table to check if a given target word can be created by concatenating two words from an array. Understand the algorithm's approach to splitting the target word, storing array words in a hash table, and validating each prefix-suffix combination. This lesson provides a detailed solution with time and space complexity analysis, helping you grasp efficient word formation using hashing.

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Statement

Given an array of words wordsArray, determine whether a given target can be formed by combining two words from the array in any order.

Constraints:

  • 2 \leq wordsArray.length 103\leq 10^3

  • 1 \leq wordsArray[i].length 20\leq 20 ...