SUBARRAY AND SUBSTRING PROBLEMS

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CAN ANY ONE SUGGEST ME GOOD SUBARRAY ,SUBSTRING AND SUBSEQUENCE PROBLEMS FOR PRACTICE TO GET MYSELF GOOD AT THEM.

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Here you go : -

1)Sum of all Subarrays | Set 1 - GeeksforGeeks

2)XOR of all subarray XORs | Set 1 - GeeksforGeeks

3)Mathison and the funny subarray | Practice Problems

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3

What is difference between subarray and subsequence?
(is it that in subsequence sequence matters and in subarray sequence doesn’t matter or vice versa)?

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Subarray is Contagious Part of an array
Substring is Contagious part of a string
Subseqence is Non-Contagious part of array or string.It is a sequence that can be generated from another sequence without changing order
For Further refer:-

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