CodeSignal

//12
function sortByHeight(a) {
    for(var i=0;i<a.length;i++)
        {
            for(var j=0;j<a.length;j++)
                {   if(a[i]!=-1){
                    if(a[i]<a[j])
                        {
                            var aux=a[i]
                            a[i]=a[j]
                            a[j]=aux
                        }}
                }
        }
    return a
}

//13
function reverseInParentheses(inputString) {
let output = "";
let bracketContent = "";
let bracketCounter = 0;

for (let i = 0; i < inputString.length; i++) {
    let currentChar = inputString[i];

    switch (currentChar) {
        case "(":
            if (bracketCounter !== 0) {
                bracketContent += currentChar;
            }
            bracketCounter++;
            break;
        case ")":
            if (bracketCounter !== 1) {
                bracketContent += currentChar;
            }
            if (bracketCounter === 1) {
                output += reverseInParentheses(bracketContent).split("").reverse().join("");
                bracketContent = "";
            }
            bracketCounter--;
            break;
        default: if (bracketCounter === 0){
                output += currentChar;
            } else {
                bracketContent += currentChar;
            }
            break;
    }
}
return output;
}

//14
function alternatingSums(a) {
var team1=0;
var team2=0;
for (var i=0;i<a.length;i++)
    {
        if(i%2==0)
            team1+=a[i]
        else
            team2+=a[i]
    }
var output=[team1,team2]
return output
}

//15
function addBorder(picture) {
var l=picture.length;
var output=[];
var row=[];
for(var i=0;i<picture[0].length+2;i++)
    {
        row.push("*")
    }
row=row.join("");
output.push(row);
for(var i=0;i<l;i++)
    {
        var array=picture[i].split()
        array.push("*");
        array.unshift("*");
        array=array.join("");
        output.push(array);
    }
output.push(row);
return output
}

//16
function areSimilar(a, b) {
    var x = new Array();
    for (let i = 0; i < a.length; i++) {
        if (a[i] != b[i]){
            if (x.length == 2) return false;
            x.push(i);
        }
    }
    if (x.length == 0) return true;
    if (a[x[0]] == b[x[1]] && a[x[1]] == b[x[0]]) return true;
    return false;
}
//17
function arrayChange(inputArray) {
var c=0;
    for(var i=1;i<inputArray.length;i++)
        {
            while(inputArray[i]<=inputArray[i-1])
            {
             c++
             inputArray[i]++
            }
        }
return c;
}
//18
function palindromeRearranging(a) {
var map = {};
var sum = 0;
for(var i = 0; i<a.length; i++) {
    sum += ((map[a[i]] = -~map[a[i]])%2) *2 - 1
}
return (sum == 0 || sum == 1)
}
//19
function areEquallyStrong(yourLeft, yourRight, friendsLeft, friendsRight) {
if(yourLeft==friendsLeft && yourRight==friendsRight) return true
if(yourLeft==friendsRight && yourRight==friendsLeft) return true
return false
}
//20
function arrayMaximalAdjacentDifference(inputArray) {
var max=0
for(var i=1;i<inputArray.length;i++)
    {
        var dif1=inputArray[i-1]-inputArray[i]
        var dif2=inputArray[i]-inputArray[i-1]
        var dif=Math.max(dif1,dif2)
        if(dif>max)
         max=dif
    }
    return max
}
//21
function isIPv4Address(inputString) {
var x=inputString.split(".");
if(x.length!=4) return false
for(var i=0;i<x.length;i++)
    {
        if(x[i]==="") return false
        if(!isNaN(x[i]))
            {
                if(x[i]>255) return false
            }
        else return false
    }

return true
}
//22
function avoidObstacles(inputArray) {
var jump=2;
var i=0;
while(i<inputArray.length){
    if(inputArray[i]%jump===0)
        {
            jump+=1
            i=0
            continue;
        }
    i+=1
 }
    return jump
}
//23
function boxBlur(image) {
var imgArray= [];
    for(var y=0; y<image.length-2;y++)
    {
        var line=[];
        for(var x=0; x<image[y].length-2;x++)
            {
                var sum=0;
                for(var a=y;a<y+3;a++)
                    {
                        for( var b=x;b<x+3;b++){
                            sum+=image[a][b];
                        }
                    }
                line.push(Math.floor(sum/9));
            }
       imgArray.push(line);
    }
  return imgArray;
}
//24
function arrayReplace(inputArray, elemToReplace, substitutionElem) {
var output=[]
for(var i=0;i<inputArray.length;i++)
    {
        output.push(inputArray[i])
        if(inputArray[i]==elemToReplace){
            output.pop();
            output.push(substitutionElem);
        }

    }
return output
}
//25
function arrayReplace(inputArray, elemToReplace, substitutionElem) {
var output=[]
for(var i=0;i<inputArray.length;i++)
    {
        output.push(inputArray[i])
        if(inputArray[i]==elemToReplace){
            output.pop();
            output.push(substitutionElem);
        }

    }
return output
}
//26
function evenDigitsOnly(n) {
var a=n.toString()
var output=true;
for(var i=0;i<a.length;i++)
    {
        if(a[i]%2!=0) {
            output=false;
        }

    }
return output

}
//27
function alphabeticShift(inputString) {
var abc="abcdefghijklmnopqrstuvwxyza";
var rezultat="";
for(var i=0;i<inputString.length;i++){
    for(var j=0;j<abc.length;j++){
        if(inputString[i]==abc[j])
            {
                rezultat+=abc[j+1]
                break;
            }
    }
}
 return rezultat;

}
//28
function alphabeticShift(inputString) {
var abc="abcdefghijklmnopqrstuvwxyza";
var rezultat="";
for(var i=0;i<inputString.length;i++){
    for(var j=0;j<abc.length;j++){
        if(inputString[i]==abc[j])
            {
                rezultat+=abc[j+1]
                break;
            }
    }
}
 return rezultat;

}
//29
function chessBoardCellColor(cell1, cell2) {
    var aceg="ACEG".split('')
    var bdfh="BDFH".split('')
    if(aceg.includes(cell1[0])&&cell1[1]%2==0){
       var c1Color=1;
    }
    if(aceg.includes(cell1[0])&&cell1[1]%2==1)
        c1Color=0;
    if(bdfh.includes(cell1[0])&&cell1[1]%2==1)
        c1Color=1;
     if(bdfh.includes(cell1[0])&&cell1[1]%2==0)
        c1Color=0;
    if(aceg.includes(cell2[0])&&cell2[1]%2==0){
       var c2Color=1;
    }
    if(aceg.includes(cell2[0])&&cell2[1]%2==1)
        c2Color=0;
    if(bdfh.includes(cell2[0])&&cell2[1]%2==1)
        c2Color=1;
     if(bdfh.includes(cell2[0])&&cell2[1]%2==0)
        c2Color=0;

    return c1Color==c2Color
}
//30
function circleOfNumbers(n, firstNumber) {
    if(firstNumber>=n/2){
         return firstNumber-n/2;
        }
    return firstNumber+n/2;
}
//31
function depositProfit(deposit, rate, threshold) {
var c=0;
while(deposit<threshold)
    {
        var rata=rate/100*deposit;
        deposit+=rata;
        c++;
    }
return c
}
//32
function absoluteValuesSumMinimization(a) {
 return a[Math.floor((a.length-1)/2)];
}
//33
function isNext(string1,string2){
    var diff=0;
    for(var i=0;i<string1.length;i++){
        if(string1[i]!=string2[i])
            diff++;
    }
    if (diff!=1)
        return false;
    else
        return true;
}

function arranged(array){
    var chars=true;
    for(var i=0;i+1<array.length&&chars;i++){
        if(!isNext(array[i],array[i+1]))
            chars=false;
    }
    return chars;
}

function findNext(string,string_i,array){
    var index=-1;
    for(var i=0;i<array.length&&index==-1;i++){
        if(isNext(string,array[i]))
            index=i;
    }
    return index;
}

function stringsRearrangement(inputArray) {
    var next=0;
    inputArray.sort();
    for(var i=0;i<inputArray.length&&next>=0&&!arranged(inputArray);i++){
        next=findNext(inputArray[i],i,inputArray);
        if(next>=0&&(next>i+1||next<i-1)){
            inputArray.splice(i+1,0,inputArray[next])
            if(next<i+1)
                inputArray.splice(next,1);
            else
                inputArray.splice(next+1,1);
        }
    }
    return arranged(inputArray);
}
//34
function extractEachKth(inputArray, k) {

var index=[];
var c=0;
    for(var i=0; i<inputArray.length; i++)
        {
            index.push(inputArray[i]);
            c++;
            if(c==k){
                index.pop();
                c=0;
            }
        }
return index;
}
//35
function firstDigit(inputString) {
for(var i=0; i<inputString.length; i++)
    {
        if(/[0-9]/.test(inputString[i])){
           return inputString[i];
        }
    }
return null;
}