C. SecretMessage.js

module.exports = function(inputData, inputDictionary) {
	sortByCoordinates(inputData);
	
    const textMessages = inputData.map((item) => item.text);
    const resultMessage = textMessages.join(' ');

    const absentWords = [];
    for (let i = 0; i < inputData.length; i++) {
        let found = false;
        for (let j = 0; j < inputDictionary.length; j++) {
            if (inputData[i].text == inputDictionary[j]) {
                found = true;
            }
        }
        if (!found) {
            absentWords.push(inputData[i].text);
        }
    }
    
    if (absentWords.length) {
        return "Unreadable message";
    } else {
        return resultMessage;
    }
    
   
    function sortByCoordinates(arr) {
        for (var i = 0, endI = arr.length - 1; i < endI; i++) {
            for (var j = 0, endJ = endI - i; j < endJ; j++) {
                if (arr[j].geometry[0] > arr[j + 1].geometry[0]) {
                    var swap = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = swap;
                }
            }
        }
        return arr;
    }
}