Given a string s, we need to partition it into the smallest number of substrings such that no character repeats within any substring. For example, for the string "abac", the optimal partitioning is ...

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You are given a 0-indexed integer array nums and an integer pivot. Rearrange nums such that the following conditions are satisfied: Every element less than pivot appears before every element greater ...

# Given an array of 2n integers, your task is to group these integers into n pairs of integer, # say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as ...