Check if a String Is an Acronym of Words

Problem Description

Given an array of strings words and a string s, determine if s is an acronym of words. The string s is considered an acronym of words if it can be formed by concatenating the first character of each string in words in order.

Key Insights

• The acronym is formed by taking the first character of each word in the given order.
• The lengths of words and s must match for s to be a valid acronym.
• Simple iteration can be used to construct the acronym from the words array.

Space and Time Complexity

Time Complexity: O(n), where n is the number of words in the array.
Space Complexity: O(1), as we only need a few variables to store intermediate results.

Solution

We will iterate through each string in the words array, extract the first character, and concatenate these characters to form a new string. Finally, we will compare this constructed string to s to determine if they are equal.

Code Solutions