Equal Neighbours _JS Fund_Arr Advance MoreEX

function solve(args) {

    let counter = 0;

    for (let index = 0; index < args.length - 1; index++) {

        for (let j = 1; j < args[index].length; j++) {

            if (args[index][j] == args[index + 1][j]) {

                counter++;

            }

            if (args[index][j] == args[index][j - 1]) {

                counter++;

            }

        }

    }

    for (let index = 0; index < args[args.length - 1].length; index++) {

        if (args[args.length - 1][index] == args[args.length - 1][index + 1]) {

            counter++;

        }

    }

    for (let index = 0; index < args.length - 1; index++) {

        if (args[index][0] == args[index + 1][0]) {

            counter++;

        }

    }

    console.log(counter);

}
solve([['2', '3', '4', '7', '0'],
['4', '0', '5', '3', '4'],
['2', '3', '5', '4', '2'],
['9', '8', '7', '5', '4']]
);