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	Top 20 Problems on Dynamic programming		Top 10 Problems on Backtracking
	Top 20 Problems on Graph		Top 25 Problems on Trees

All Problems

#	Status	Problem	Level	Completes	Likes
351		Nuts & Bolts Problem (Lock & Key problem)	Beginner	%	0
352		Divide and Conquer - Rearrange array elements in special order	Medium	%	0
353		Remove Duplicates from a string	Medium	%	0
354		Find median of two sorted arrays of same size	Medium	%	0
355		Dynamic programming – Minimum Jumps to reach to end	Hard	%	0
356		Dynamic programming – Printer Problem	Hard	%	0
357		Dynamic programming - Remove Boxes Problem	Hard	%	0
358		Separate even and odd integers in a given array	Beginner	%	0
359		Find local minimum or local maximum in O(1).	Medium	%	0
360		Separate 0’s and 1’s in a given array	Beginner	%	0
361		Find three elements in an array that sum to a zero.	Beginner	%	0
362		Find three elements in an array that sum to a given value	Beginner	%	0
363		Majority Element- Boyer–Moore majority vote algorithm	Medium	%	0
364		Majority Element – Part 1	Beginner	%	0
365		Find the local minima in a given array	Medium	%	0
366		Check whether the given number is a perfect square	Beginner	%	0
367		Check if array is sorted using recursion	Beginner	%	0
368		Find the Index from which 0 starts	Beginner	%	0
369		Find the increasing OR decreasing point in an array	Beginner	%	0
370		Find remainder without using modulo operator	Beginner	%	0
371		Swap two numbers without using extra variable	Beginner	%	0
372		Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer	Hard	%	0
373		Maximum difference between two elements where larger element appears after the smaller element	Medium	%	0
374		Find the element which appears maximum number of times in the array.	Medium	%	0
375		Find duplicates in an given array in O(n) time and O(1) extra space.	Medium	%	0
376		Find the last non repeating character in a given string.	Beginner	%	0
377		Find the last repeating character in a given string.	Beginner	%	0
378		Find the first non repeating character in a given string	Beginner	%	0
379		Find the first repeating character in a given string	Beginner	%	0
380		k-Nearest Neighbors	Hard	%	0
381		Reverse the given Array without using built in function	Beginner	%	0
382		Dynamic Programming - Coin In a Line Game Problem	Hard	%	0
383		Dynamic Programming - Box Stacking Problem	Hard	%	0
384		Dynamic Programming - Split the String into Minimum number of Palindromes.	Hard	%	0
385		Dynamic Programming - Highway Billboard Problem	Hard	%	0

Nuts & Bolts Problem (Lock & Key problem)

Divide and Conquer - Rearrange array elements in special order

Remove Duplicates from a string

Find median of two sorted arrays of same size

Dynamic programming – Minimum Jumps to reach to end

Dynamic programming – Printer Problem

Dynamic programming - Remove Boxes Problem

Separate even and odd integers in a given array

Find local minimum or local maximum in O(1).

Separate 0’s and 1’s in a given array

Find three elements in an array that sum to a zero.

Find three elements in an array that sum to a given value

Majority Element- Boyer–Moore majority vote algorithm

Majority Element – Part 1

Find the local minima in a given array

Check whether the given number is a perfect square

Check if array is sorted using recursion

Find the Index from which 0 starts

Find the increasing OR decreasing point in an array

Find remainder without using modulo operator

Swap two numbers without using extra variable

Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer

Maximum difference between two elements where larger element appears after the smaller element

Find the element which appears maximum number of times in the array.

Find duplicates in an given array in O(n) time and O(1) extra space.

Find the last non repeating character in a given string.

Find the last repeating character in a given string.

Find the first non repeating character in a given string

Find the first repeating character in a given string

k-Nearest Neighbors

Reverse the given Array without using built in function

Dynamic Programming - Coin In a Line Game Problem

Dynamic Programming - Box Stacking Problem

Dynamic Programming - Split the String into Minimum number of Palindromes.

Dynamic Programming - Highway Billboard Problem

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