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Rust program to merge two arrays into third array

Rust | Array Example: Write a program to merge two arrays into a third array.
Last Updated : October 20, 2021

Problem Statement

In this program, we will create three arrays of integers. Then we will merge two arrays into a third array.

Program/Source Code

The source code to merge two arrays into a third array is given below. The given program is compiled and executed successfully.

// Rust program to merge two arrays 
// into 3rd array

fn main() {
    let mut arr1:[i32;5] = [0,1,2,3,4];
    let mut arr2:[i32;5] = [5,6,7,8,9];
    let mut arr3:[i32;10] = [0;10];
    
    let mut i:usize = 0;
    let mut j:usize = 0;
    
    while i<5
    {
        arr3[i]=arr1[i];
        i = i + 1;
    }
    
    while j<5
    {
        arr3[i]=arr2[j];
        i = i + 1;
        j = j + 1;
    }
    
    println!("arr1: {:?}",arr1);
    println!("arr2: {:?}",arr2);
    println!("arr3: {:?}",arr3);
}

Output

arr1: [0, 1, 2, 3, 4]
arr2: [5, 6, 7, 8, 9]
arr3: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Explanation

Here, we created two arrays of the integers with 5 elements and 3^rd array with 10 elements initialized with 0. Then we copy the elements of arr1 and arr2 into arr3. After that, we printed the all arrays.

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