Category Archives: interview

Jewels and Stones

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Single- row Keyboard

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Most Stones Removed with Same Row or Column

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Next Closest Time

Algorithm * Difference between permutation and combination is, for permutation ordering is important. 43 and 34 are two different items. But for combination, ordering is not important, 43 and 34 means same * Permutation formula: nPr = (n!) / (n-r)! … Continue reading

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Backspace String Compare

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Evaluate Division

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License Key Formatting

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Unique Email Addresses

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Leetcode: SQL

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Interviewbit: backtracking

//palindrmic partition

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