/*
Function: countOddEven
Purpose: Counts how many odd and even numbers exist in the matrix.
Parameters:
- matrix: the 2D vector
- rows: number of rows in the matrix (computed inside the function)
- cols: number of columns in the matrix (computed inside the function)
- odd: variable to store odd count
- even: variable to store even count
*/
fn count_odd_even(matrix: &Vec<Vec<i32>>) -> (i32, i32) {
// Automatically compute matrix dimensions inside the function
let rows: usize = matrix.len();
let cols: usize = matrix[0].len();
let mut odd: i32 = 0;
let mut even: i32 = 0;
for i in 0..rows {
for j in 0..cols {
// Check if the number is even or odd
if matrix[i][j] % 2 == 0 {
even += 1;
} else {
odd += 1;
}
}
}
(odd, even)
}
fn main() {
let matrix: Vec<Vec<i32>> = vec![
vec![1, 0, 2, 5],
vec![3, 5, 6, 9],
vec![7, 4, 1, 8],
];
// Call the function (rows and cols are now computed inside)
let (odd_count, even_count) = count_odd_even(&matrix);
// Display the result
println!("The frequency of odd numbers = {}", odd_count);
println!("The frequency of even numbers = {}", even_count);
}
/*
run:
The frequency of odd numbers = 7
The frequency of even numbers = 5
*/
