Merge Nested Dictionaries Iteratively
Problem: Merge Nested Dictionaries Iteratively
Given a list of Python dictionaries, implement a function to merge them into a single dictionary without using recursion.
Rules:
- Process the dictionaries from left to right.
- If a key appears in only one dictionary, keep that key-value pair.
- If the same key appears in multiple dictionaries:
- When both values are dictionaries, merge those dictionaries using the same rules.
- Otherwise, the value from the later dictionary overrides the earlier one.
- You may assume keys are strings.
Example:
- Input:
[{"a": 1, "b": {"x": 2}}, {"b": {"y": 3}, "c": 4}, {"b": {"x": 5}}] - Output:
{"a": 1, "b": {"x": 5, "y": 3}, "c": 4}
Implement a function that returns the merged dictionary using an iterative approach.
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Core dilemma
Simulating recursive logic iteratively for nested data structures, specifically managing the state and context of multiple concurrent merges without using actual recursion.
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Merge Nested Dictionaries Iteratively
Problem: Merge Nested Dictionaries Iteratively
Given a list of Python dictionaries, implement a function to merge them into a single dictionary without using recursion.
Rules:
- Process the dictionaries from left to right.
- If a key appears in only one dictionary, keep that key-value pair.
- If the same key appears in multiple dictionaries:
- When both values are dictionaries, merge those dictionaries using the same rules.
- Otherwise, the value from the later dictionary overrides the earlier one.
- You may assume keys are strings.
Example:
- Input:
[{"a": 1, "b": {"x": 2}}, {"b": {"y": 3}, "c": 4}, {"b": {"x": 5}}] - Output:
{"a": 1, "b": {"x": 5, "y": 3}, "c": 4}
Implement a function that returns the merged dictionary using an iterative approach.