Packaged Application Developer

You are given a string 'S'. Your task is to check whether the string is palindrome or not. For checking palindrome, consider alphabets and numbers only and ignore the symbols and whitespaces.

Note :

String 'S' is NOT case sensitive.

Example :

Let S = “c1 O$d@eeD o1c”.
If we ignore the special characters, whitespaces and convert all uppercase letters to lowercase, we get S = “c1odeedo1c”, which is a palindrome. Hence, the given string is also a palindrome.

You are given an array ‘ARR’ of size ‘N,’ and you have to tell the minimum number of elements that need to be removed such that the array contains all distinct elements. More formally, there should not be any ‘I’ and ‘J’ such that ‘I’ != ‘J’ and ‘ARR’[‘I’] = ‘ARR’[‘J’].

For example:

Given ‘N’ = 4, 
'ARR' = { 1, 2, 1, 2} 
Then the answer is 2 because 1 and 2 are repeated once therefore we need to remove 2 elements.

Task: Read the sentence clearly and fluently.

Sample:
"Technology has transformed the way we communicate and work in modern society."

Task: Listen and repeat exactly.
Sample (audio-based):
“The project deadline has been extended by two days.”

Task: Speak for 30–60 seconds.
Sample Question:
"Describe a challenging situation you faced and how you handled it."

Task: Describe what you see.

Sample:
You might see an image of:

• People working in an office
• A classroom

Task: Listen to the audio and answer.

Sample:
Audio: A short conversation between two colleagues about a meeting.

Question:
“Why was the meeting postponed?”

You have been given an integer array/list(arr) and a number 'Sum'. Find and return the total number of pairs in the array/list which when added, results equal to the 'Sum'.

Note:

Given array/list can contain duplicate elements.

(arr[i],arr[j]) and (arr[j],arr[i]) are considered same.

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