You are given two arrays of objects. Each object contains an id field and other key-value data. The goal is to merge the data by id.
- If an
id exists in both arrays, merge the properties.
- If it exists only in one, include it as is.
- In case of conflict (same key but different values), prefer values from the second array.
Input:
- Two arrays of objects (each object has at least an
id key)
Output:
- A new array with merged objects based on
id
Example Inputs & Outputs
Input:
arr1 = [{ id: 1, name: "Alice" }, { id: 2, name: "Bob" }]
arr2 = [{ id: 2, age: 30 }, { id: 3, name: "Charlie" }]
Output:
[
{ id: 1, name: "Alice" },
{ id: 2, name: "Bob", age: 30 },
{ id: 3, name: "Charlie" }
]
Constraints & Edge Cases
- Arrays can be of different lengths
- Objects may have overlapping or unique fields
- Duplicate
ids within a single array should not occur
- If the same field exists in both and differs, use the value from the second array
