Python vs. C++ vs. Swift: Performance Comparison of Find Duplicate Algorithm

There could be several reasons why the first Python code may be faster than the second C++ and third Swift code:
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1. Compiler optimization: The compiler may optimize the code differently in each language, leading to different execution speeds.
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2. Language-specific performance characteristics: Each language has its own performance characteristics and optimizations. Python is an interpreted language, while C++ and Swift are compiled languages. This difference in execution models can affect the performance.
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3. Implementation details: The specific implementation of the algorithms and data structures used in the code can also impact the performance. Even though the code may have the same logic, the underlying implementation details can differ.
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4. Hardware differences: The performance can also be influenced by the hardware on which the code is executed. Different hardware architectures can have different efficiencies for executing certain types of operations.
   
   It is important to note that performance can vary depending on the specific input and environment, and it is not always guaranteed that one language will consistently outperform others.