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Interview Questions preliminary round
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1)Print squares of first n natural numbers without using *, / and - | |
Input: n = 6 | |
Output: 0 1 4 9 16 25 | |
O(n) time | |
solution In Javascript | |
var square =0,prev=0; | |
function printSquares(n){ | |
for(var x=0;x<n;x++){ | |
square = (square+x+prev); | |
//console.log('x'+x);console.log('prev'+prev);console.log('square+x+prev'+square); | |
console.log(square); | |
prev=x; | |
}} | |
printSquares(10); | |
2)Given an array of n+2 element , there are two repeating number , how to find that. | |
n = 5; | |
set {4, 2, 4, 5, 2, 3, 1} | |
output 2 4 | |
solution In Javascript | |
var arr =[4,1,4,5,2,3,2]; | |
var length_arr = arr.length; | |
print_repeating(arr,length_arr) | |
function print_repeating(arr,l){ | |
for(var i=0;i<l;i++){ | |
for(var j=i+1;j<l;j++){ | |
if(arr[i]==arr[j])console.log(arr[i]); | |
}}} | |
Time Complexity: O(n*n) | |
3)Logic gates | |
XOR - > a.!b+!a+b | |
00 0 | |
01 1 | |
10 1 | |
11 0 | |
4)Given a mobile number 10 digit all digits unique,how will you check for number uniqueness , no digit should repeat. | |
Optimization cases. | |
Move all zeroes to end of array | |
Logic Test : | |
You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple. | |
Now all your friends have one apple each, yet there is an apple remaining in the basket. | |
->each friend has an apple, and one of them has apple+basket. | |
MVC | |
mysql basics | |
What are design patterns in software engineering? | |
What did you learn yesterday/this week? | |
What excites or interests you about coding? | |
Talk about your preferred development environment. (OS, Editor or IDE, Browsers, Tools etc.) | |
Which version control systems are you familiar with? | |
Can you describe your workflow when you create a web page? | |
How would you optimize a websites assets/resources? | |
Traditionally, why has it been better to serve site assets from multiple domains? | |
How many resources will a browser download from a given domain at a time? | |
Do you have any pet projects? What kind? | |
What are some things you like about the developer tools you use? | |
What's a cool thing you've coded recently? What's something you've built that you're proud of? | |
What is Ajax? | |
asynchronous data transfer | |
Bandwidth utilization | |
More interactive | |
Speeder retrieval of data | |
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