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What Is Vec<(I64, I64)> Data Type In Rust?

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In Rust, Vec<(i64, i64)> is a data type that represents a vector (dynamic array) of tuples containing two 64-bit signed integers. This data type allows you to store a collection of pairs of 64-bit integers in a resizable container. You can perform various operations on this data type such as adding elements, removing elements, and accessing elements by index. It is useful for scenarios where you need to store a collection of pairs of integers and manipulate them dynamically.


How to find the maximum and minimum elements in a vec<(i64, i64)> data type in Rust?

To find the maximum and minimum elements in a Vec<(i64, i64)> data type in Rust, you can use the iter method to iterate over the elements and then use the max() and min() functions to find the maximum and minimum elements, respectively.


Here is an example code snippet to achieve this:

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fn main() {
    let data: Vec<(i64, i64)> = vec![(1, 2), (3, 4), (5, 6), (7, 8)];

    if let Some(max_element) = data.iter().max_by_key(|&x| x.0) {
        println!("Maximum element: {:?}", max_element);
    }

    if let Some(min_element) = data.iter().min_by_key(|&x| x.1) {
        println!("Minimum element: {:?}", min_element);
    }
}


In this code snippet, we first define a Vec of tuples containing i64 elements. We then use the iter() method to create an iterator over the elements in the vector. We then use the max_by_key() and min_by_key() functions to find the maximum and minimum elements based on a specific key. In this case, we are finding the maximum element based on the first element of the tuple (x.0) and the minimum element based on the second element of the tuple (x.1).


Finally, we use pattern matching to extract the optional maximum and minimum elements and print them to the console.


How to convert a vec<(i64, i64)> data type to a different data type in Rust?

To convert a Vec<(i64, i64)> to a different data type in Rust, you can use the into_iter() method to iterate over the vector and convert each tuple into the desired data type. Here is an example where we convert a Vec<(i64, i64)> to a Vec<i64>:

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fn main() {
    let vec_of_tuples: Vec<(i64, i64)> = vec![(1, 2), (3, 4), (5, 6)];

    let vec_of_i64: Vec<i64> = vec_of_tuples
        .into_iter()
        .flat_map(|(a, b)| vec![a, b])
        .collect();

    println!("{:?}", vec_of_i64);
}


In this example, we use into_iter() to get an iterator over the vector of tuples. Then, we use flat_map() to flatten each tuple into individual elements and create a new vector of i64 type. Finally, we use collect() to collect the elements into a new Vec<i64>.


What is the purpose of the vec<(i64, i64)> data type in Rust?

The purpose of the Vec<(i64, i64)> data type in Rust is to create a dynamic array (vector) that contains tuples of two i64 integers. This can be useful for storing pairs of integers together in a collection that can grow or shrink in size as needed. It allows for efficient access and manipulation of the data as compared to using separate arrays or other data structures.

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