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Merged
OlegLustenko merged 5 commits into from
Jun 21, 2018
Merged

Homework 6 #7

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1f3528c
homework-5
serhii-baksheiev Jun 15, 2018
83fac4b
homework-5 fixed concat
serhii-baksheiev Jun 17, 2018
b2ac0b5
homemade-5 fixed recurcion whit reduce
serhii-baksheiev Jun 19, 2018
1ed5490
homework-6
serhii-baksheiev Jun 19, 2018
fc8fbdc
homework_6 fixed
serhii-baksheiev Jun 20, 2018
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10 changes: 10 additions & 0 deletions js-core/homeworks/homework-5/index.html
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<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="UTF-8">
<title>test page</title>
</head>
<body>
<script src="src/main.js"></script>
</body>
</html>
165 changes: 165 additions & 0 deletions js-core/homeworks/homework-5/src/main.js
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/*
1. Переместите 0 в конец массива, остальные числа должны остаться
неизменными
// concat
example:
[1,false,2,0,3,null,0,4,0,25] => [1, false, 2, 3, null, 4, 25, 0, 0, 0]
[ 'a', 0, 0, 'b', null, 'c', 'd', 0, 1, false, 0, 1, 0, 3, [], 0, 1, 9, 0, 0, {}, 0, 0, 9 ] => ["a","b",null,"c","d",1,false,1,3,[],1,9,{},9,0,0,0,0,0,0,0,0,0,0]
[ 0, 1, null, 2, false, 1, 0 ] => [1,null,2,false,1,0,0]
*/
let arr1 = [1, false, 2, 0, 3, null, 0, 4, 0, 25];
let arr2 = [
'a',
0,
0,
'b',
null,
'c',
'd',
0,
1,
false,
0,
1,
0,
3,
[],
0,
1,
9,
0,
0,
{},
0,
0,
9
];
function moveZeroToEnd(arr) {
let newArr = [];
let arrWithnumber = [];
for(let i=0;i<arr.length;i++){
let index = arr[i];
if(index===0){
newArr.push(index);
continue
}
arrWithnumber.push(index);
}
return arrWithnumber.concat(newArr);
}
console.log(moveZeroToEnd(arr1));
console.log(moveZeroToEnd(arr2));
/*
2. Верните сумму двух найменьших чисел в массиве
[10,20,30,1,31,11,10] => 11
[-1,0,25] => -1
[-4,-10,25,10] => -14
[0,200,10,25,15] => 10
*/

function minimalNumber(arr) {

arr = arr.sort(function compareNumeric(a, b) {
if (a > b) return 1;
if (a < b) return -1;
}
)
let minNum1 = arr[0];
let minNum2 = arr[1];
return minNum1 + minNum2;
}
console.log(minimalNumber([10,20,30,1,31,11,10]));
console.log(minimalNumber([-1,0,25]));
console.log(minimalNumber([-4,-10,25,10]));
console.log(minimalNumber([0,200,10,25,15]));

/*
3. Напишите функцию которая меняет местами имя и фамилию
nameShuffler('john McClane'); => "McClane john"
nameShuffler('Arnold Schwarzenegger'); => "Schwarzenegger Arnold"
nameShuffler('James Bond'); => "Bond James"
*/

function nameShuffler(str) {
let arr = str.split(' ');
arr.reverse();
let arrToStr = arr.join(' ');
return arrToStr;
}
console.log(nameShuffler('James Bond'));
console.log(nameShuffler('Arnold Schwarzenegger'));
console.log(nameShuffler('john McClane'));


/*
// !
4. Напишите функцию которая принимает массив с именами и возвращает массив
в котором каждая буква становится заглавной
capMe(['jo', 'nelson', 'jurie']) // returns ['Jo', 'Nelson', 'Jurie']
capMe(['KARLY', 'DANIEL', 'KELSEY']) // returns ['Karly', 'Daniel', 'Kelsey']
*/

function capMe(arr) {
for(let i=0;i< arr.length ;i++){
let elem = arr[i]
elem = elem.toLowerCase()
elem = elem.charAt(0).toUpperCase() + elem.slice(1);
console.log(elem);
}
};
capMe(['KARLY', 'DANIEL', 'KELSEY'])
capMe(['jo', 'nelson', 'jurie'])

// @SUPER
/*
1. Найдите число отсутствующее в заданной последовательности
example:
[1,3,5,9] => 7 (9-1) / 4 == 2
[0,8,16,32] => 24
[4, 6, 8, 10] => 2 // число сначала
[0,16,24,32] => 8
*/

function random(arr) {
let lastElem = arr[arr.length - 1];
let firstElem = arr[0];
let step = (lastElem - firstElem)/arr.length;
for(let i = 0;i<arr.length;i++){
let elem = arr[i];
let nextElem = arr[i+1];
if(nextElem){
return lastElem - arr[arr.length -2];
}
if(elem + step != nextElem){
return elem + step
}
}
return
}

console.log(random([1, 3, 5, 9]));
console.log(random([0, 8, 16, 32]));
console.log(random(([0, 16, 24, 32])));
console.log(random([4, 6, 8, 10]));

/*
Задача с собеседований*
2. Напишите функция которая преобразовывает/открывает скобки всех
вложенных внутри массивов
Необходимо реализовать рекурсивный фызов функции.
Функция должна открывать любое количество внутренних массивов
example:
[[1,2],[3,[4]],5, 10] => [1,2,3,4,5,10]
[25,10,[10,[15]]] => [25,10,10,15]
*/

function openBraces(arr) {
if(Array.isArray(arr)){
return arr.reduce(function(result, current){
return result.concat(openBraces(current))
}, [])
}
return arr
};
console.log(openBraces([25,10,[10,[15]]]));
console.log(openBraces([[1,2],[3,[4]],5, 10]));
10 changes: 10 additions & 0 deletions js-core/homeworks/homework-6/index.html
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="UTF-8">
<title>test page</title>
</head>
<body>
<script src="src/main.js"></script>
</body>
</html>
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