Find if there are two numbers in an array that add up to a target sum.

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Find the contiguous subarray within a one-dimensional array of numbers that has the largest sum (Kadane’s algorithm).

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Find the missing number in an array containing numbers from 1 to n.

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Given a collection of intervals, merge all overlapping intervals.

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Find the duplicate number in an array containing n+1 integers where each integer is between 1 and n (inclusive).

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Rotate the elements of an array to the right by a given number of steps without using extra space for another array.

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Given a collection of intervals, merge all overlapping intervals.

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This could involve sorting the array or using a quick select algorithm.

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Given an array of 0s, 1s, and 2s, sort the array so that all 0s are at one end, 1s are in the middle, and 2s are at the other end.

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Given is an array of int A, & a sliding window of size B that moves from left to right. Find max value in a sliding window of size B as it moves through the array.

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