Given an integer n, return the least number of perfect square numbers that sum to n.
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Essentially there was given a collection of objects with certain equivalence relation, and you have to split all the objects into classes.
How to in-place reverse string
Signed an NDA but basically study arrays, maps, graphs, DP, etc. Was asked “tell me about a time X”questions regarding DoorDash principles.
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Singed an NDA
Return the index of a target number in a list. In case of multiple instances of the number, each index should be returned with an equal probability.
Converting a string input to key:value dictionary.
Trie predictive search, Balanced BST
Rearrange a array by given index (Smaller ones go left and bigger ones go right); find the longest consecutive increment sequence
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