function equalNeighbors(arr) {
    let count = 0;
    let numberOfColumns = arr.length;
    let numberOfRows = arr[0].length;
    arr = arr.toString().split('').join('').split(',');
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] === arr[i + 1] && (i + 1) % numberOfRows !== 0) {
            count++
        }
    }
    for (let j = 0; j < arr.length; j++) {
        if (arr[j] === arr[j + numberOfRows]) {
            count++
        }
    }
    return count;
}