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Yes, problems like Create Object from Two Arrays are common in interviews because they test understanding of arrays, hash maps, and iteration. They are especially popular in JavaScript-focused coding assessments and frontend interviews.
A hash map or object is the best data structure because it allows constant-time insertion and efficient key-value storage. As you iterate through the arrays, you simply assign each key to its corresponding value.
The optimal approach is to iterate through both arrays simultaneously and store pairs in a hash map or object. Each key from the first array maps to the value at the same index in the second array. This requires only one pass through the arrays, giving O(n) time complexity.
When a duplicate key appears, assigning the new value to the same key overwrites the previous value. This behavior naturally occurs in most object or hash map implementations, ensuring the last occurrence of the key remains in the result.
