laddered

javascript: (function() {let gold=$("div.title-subinfo>div:contains('Золото')").closest("tr").find("td:last-child").text();gold=gold.replace(" ",""),gold=gold.replace(",","."),gold=parseFloat(gold).toFixed(2),console.log(gold);let dollar=$("div.title-subinfo>div:contains('Доллар США')").closest("tr").find("td:nth-child(2n)").text();dollar=dollar.replace(" ",""),dollar=dollar.replace(",","."),dollar=parseFloat(dollar).toFixed(2),console.log(dollar),alert("Стоимость золота на сегодня "+(gold/dollar).toFixed(2)+" USD");})();

laddered

function solution(X, A) {
  if (A.length === 1) {
    if (A[0] === 1 && X === 1) return 0; 
    else return -1;
  }
    
    i = -1
    sumOfArr = 0
    sequenceSum = (X * (X+1)) / 2
    arrOfFound = []

laddered

function solution(A) {
    A.sort(function(a,b){return a-b})
    count=0
    for(i=0; i<A.length; i++){
        if(A[i]===i+1){
            count++
        }else{
            break
        }
    }

laddered

function solution(A) {    
    while(A.length>0){
        findEl=A.shift()
        indexEl=A.indexOf(findEl)
        if(indexEl>=0){
           A.splice(indexEl,1)
        }else{
           return findEl
       }
    }

laddered

function solution(A, K) {
    if(A.length%K){
        for(let i=0; i<K; i++){
        lastNumber=A.pop()
        A.unshift(lastNumber)
        }
    }
    return A
}

laddered

function solution(N) {
    line=N.toString(2)
    arr=line.split('1')
    if(arr[arr.length-1]!=''){
        arr.pop()
    }
    arr.sort()
    if(arr[arr.length-1]!=''){
        return arr[arr.length - 1].length
    }

laddered

function solution(A) {
    A.sort((a, b) => a > b ? 1 : -1);
    if(A[0]!==1){
        return 1
    }
    for (let i=0; i<A.length-1; i++){
        if((parseInt(A[i], 10)+1)!==A[i+1]){
            return A[i]+1
        }
    }

laddered

function solution(A) {
    let P=A.length-1, difArr=[]

    for(let i=1; i<=P; i++){
        let LSumm=0, RSumm=0;
        for(let j=0; j<A.length; j++){
            if(j<i){
                LSumm+=A[j]
            }
            else{