Question

How to check if a matrix rows contain numbers without repetition in Node.js

Answer 1

function areRowsUnique(matrix) {
  return matrix.every(row => {
    const uniqueNumbers = new Set(row);
     
    return uniqueNumbers.size === row.length;
  });
}
 
const matrix1 = [
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9]
];
 
const matrix2 = [
  [1, 1, 2],
  [4, 5, 6],
  [7, 8, 0]
];
 
console.log(areRowsUnique(matrix1)); 
console.log(areRowsUnique(matrix2));
 
 
 
/*
run:
 
true
false
 
*/

 

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