function matrixSolve(inputArr) {
    var regex = /[\d]+/;
    var numArr = inputArr[0].match(regex);
    var rotationDegrees = parseInt(numArr[0]);

    //find maxlength of strings
    var maxLength = 0;
    for (var i = 1; i < inputArr.length; i++) {
        var currentLength = inputArr[i].length;
        if (currentLength > maxLength) {
            maxLength = currentLength;
        }
    }

    function paddingRight(string, maxLen) {
        var padLen = maxLen - string.length;
        for (var i = 0; i < padLen; i++) {
            string += " ";
        }
        return string;
    }
    //full-fill strings with space
    for (var i = 1; i < inputArr.length; i++) {
        inputArr[i] = paddingRight(inputArr[i], maxLength);
    }
    console.log(inputArr)
}

matrixSolve( ['Rotate(90)', 'hello','softuni', 'exam']);