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One place to find all coding problems and their basic java solutions for competitive programming and interviews.

Questions and Problems

Explore well organized problems and their solutions.

Helps Cracking Interview

Helps to clear your coding interview.

Variety Of Problems

Variety of problems from Arrays, Strings, to Trees and Graphs.

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Problems Asked In Interviews

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Array type questions where we we mostly see common problems like Single Number, Rotate Array, Two Sum...


Tree is slightly more complex and most common problems we see are Maximum Depth of Binary Tree, Validate Binary Search Tree...

Dynamic Programming

Dynamic Programming interview questions are mostly difficult. Common problems seen are Climbing Stairs, Buy and Sell Stocks...

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