4-23 Valid Flag solution

4-23 Valid Flag solution

   if(validRow(arrayOfFlagObjects[0].flag)===true && validNeighbors(arrayOfFlagObjects[0].flag)===true){
        console.log("YES");
    }else {
        console.log("NO");
    }
    
    
    // Solution 1
    
    process.stdin.resume();
process.stdin.setEncoding("ascii");
var input = "";
process.stdin.on("data", function (chunk) {
    input += chunk;
});
process.stdin.on("end", function () {
    // now we can read/parse input
    // console.log('input ', input)
    var data = input.split('\n')
    // console.log('data ', data)
    var numTestCases = data.shift()
    

    var arrayOfFlagObjects = []
    
    // console.log('numTestCases ' + numTestCases)
    // console.log('data ', data)
    
    for (var i=0; i<numTestCases; i++) {
        var flagObject = {
            rows: 0,
            columns: 0,
            flag: []
        }
        flagObject.rows = data[0][0];
        flagObject.columns = data[0][2];
        data.shift()
        for (var j=0; j<flagObject.rows; j++) {
            flagObject.flag.push(data[0])
            data.shift()
        }
        arrayOfFlagObjects.push(flagObject)
        
        
    }
    
    // console.log('array of flagobjects ', arrayOfFlagObjects)
    
    for (var x=0; x<arrayOfFlagObjects.length; x++) {
        var validRows = true;
    
        for (var i=0; i<arrayOfFlagObjects[x].rows; i++) {
            // console.log(validRow(arrayOfFlagObjects[x].flag[i]))
            if (!validRow(arrayOfFlagObjects[x].flag[i])) {
                validRows = false
            }
        }

        var validNeighbors = true;

        if (!validNeighbor(arrayOfFlagObjects[x].flag)) validNeighbors = false

        if (validRows && validNeighbors) {
            console.log('YES')
        }
        else {
            console.log('NO')
        }
        
    }
    

    
    // helper functions
    
    function validRow(row) {

        for (var i=1; i<row.length; i++) {
            if (row[i] !== row[i-1]) return false
        }
        return true;
    }
    
    function validNeighbor(flag) {

        for (var i=1; i<flag.length; i++) {
            if (flag[i][0] === flag[i-1][0]) return false
        }
        return true;
    }
    
});