carloscn
commented
1 year ago Analysis
fn check_all_in_vec(input:&Vec<i32>) -> bool
{
let mut rom:Vec<i32> = vec![0;input.len() + 1];
for e in input {
rom[*e as usize] += 1;
}
for i in 1..rom.len() {
if rom[i] == 0 {
return false;
}
}
return true;
}
pub fn check_valid(matrix: Vec<Vec<i32>>) -> bool
{
if matrix.len() < 1 && matrix[0].len() < 1 {
return false;
}
for e in &matrix {
let ret = check_all_in_vec(e);
if ret == false {
return false;
}
}
for i in 0..matrix[0].len() {
let mut e_vec:Vec<i32> = vec![];
for j in 0..matrix.len() {
e_vec.push(matrix[j][i]);
}
let ret = check_all_in_vec(&e_vec);
if ret == false {
return false;
}
}
return true;
}
Description
An n x n matrix is valid if every row and every column contains all the integers from 1 to n (inclusive).
Given an n x n integer matrix matrix, return true if the matrix is valid. Otherwise, return false.
Example 1:
Input: matrix = [[1,2,3],[3,1,2],[2,3,1]] Output: true Explanation: In this case, n = 3, and every row and column contains the numbers 1, 2, and 3. Hence, we return true.
Example 2:
Input: matrix = [[1,1,1],[1,2,3],[1,2,3]] Output: false Explanation: In this case, n = 3, but the first row and the first column do not contain the numbers 2 or 3. Hence, we return false.
Constraints:
n == matrix.length == matrix[i].length 1 <= n <= 100 1 <= matrix[i][j] <= n