fn find_floor_and_ceil(vec: &[i32], n: i32) -> (i32, i32) {
let mut floorval = i32::MIN; // Initialize to smallest possible value
let mut ceilval = i32::MAX; // Initialize to largest possible value
for &num in vec {
if num <= n && num > floorval {
floorval = num; // Update floorval if num is closer to n
}
if num >= n && num < ceilval {
ceilval = num; // Update ceilval if num is closer to n
}
}
// If no valid floorval or ceilval is found, set them to a special value
if floorval == i32::MIN {
floorval = -1;
}
if ceilval == i32::MAX {
ceilval = -1;
}
(floorval, ceilval)
}
fn main() {
let vec = vec![4, 10, 8, 2, 6, 9, 1];
let n = 5;
let (floorval, ceilval) = find_floor_and_ceil(&vec, n);
println!("floor: {}", if floorval == -1 { "None".to_string() } else { floorval.to_string() });
println!("ceil: {}", if ceilval == -1 { "None".to_string() } else { ceilval.to_string() });
}
/*
run:
floor: 4
ceil: 6
*/
