---
# System prepended metadata

title: JI interview

---

# JI interview

## Q1: print pyramid

```javascript=
const pyramid = (n) => {
    
}

console.log(pyramid(4));
console.log(pyramid(5));


/**
example: 

input: 4
output: 
   a
  bbb
 ccccc
ddddddd


input: 5
output: 
    a
   bbb
  ccccc
 ddddddd
eeeeeeeee

hint: The ASCII code for 'a' is 97.
hint: let char = String.fromCharCode(97);
**/
```

## Q3: Valid Parentheses
Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

An input string is valid if:

Open brackets must be closed by the same type of brackets.
Open brackets must be closed in the correct order.
Every close bracket has a corresponding open bracket of the same type.

```javascript=
/**
 * @param {string} s
 * @return {boolean}
 */
var isValid = function(s) {
    
};


/**
Example 1:
Input: s = "()"
Output: true

Example 2:
Input: s = "()[]{}"
Output: true

Example 3:
Input: s = "(]"
Output: false
**/
```