Added Problems For The Platform

[varundeepsaini]

Hashing

• Added Balanced Arrays Problem (Medium-Hard)
• Added Intersection Of Sets Problem (Easy)
• Added Maximise Mex Problem (Medium)
• Added Help 100xDevs Problem (Easy)
• Added IQ Diff Problem (Medium-Hard)

Binary Search

• Added Broken SubArrays Problem (Medium-Hard)
• Added Software Dev Problem (Hard)
• Added Kth - Smallest Problem (Medium-Hard)
• Added Bitonic Queries Problem (Easy-Medium)
• Added Infinite Building Problem (Easy)

Recursion

• Added Patter Printing Problem (Easy-Hard) - Observation Based
• Added Magic Numbers Problem (Easy)
• Added Balanced Expressions Problem (Easy-Medium)
• Added Divide the Array Problem (Easy-Medium)
• Added Matrix Paths Problem (Hard)

Bit Manipulation

• Added Bitwise Pairs Problem (Easy-Medium)
• Added Strange Equality Problem (Medium)
• Added Interesting Arrays Problem (Medium-Hard)
• Added Maximum Satisfaction Problem (Medium)
• Added Bitwise And Queries (Hard)

Sorting and Queues

• Added K Digit Numbers Problem (Medium-Hard)
• Added CPU Scheduling Problem (Easy-Medium)
• Added Count Inversion Problem (Medium-Hard)
• Added Unique Letters Problem (Medium)
• Added Fav Number Problem (Easy)

Stacks

• Added Balanced Parenthesis Problem (Easy-Medium)
• Added Parenthesis Problem (Medium-Hard)
• Added Maximum Second Xor (Very-Hard)
• Added Molecular Mass Problem (Medium)
• Added Sum Of Elements Problem (Easy)

Heaps

• Added Potions Problem (Hard)
• Added Kirat and Queries Problem (Easy)
• Added 100xFC Problem (Easy-Medium)
• Added Monster Game Problem (Medium)
• Added Median Queries (Medium-Hard)