Question

How to check if a matrix rows contain numbers without repetition in JavaScript

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, 2, 2],
  [4, 5, 6],
  [7, 8, 9]
];

console.log(areRowsUnique(matrix1)); 
console.log(areRowsUnique(matrix2));



/*
run:

true
false

*/

 

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