Q1. Write a python code to find the longest substring without any repetetion. Q2. Write a code for finding the second largest number in an array without using any in built python function.
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Difference between synchronous and asynchronous programming
Most languages have a built in sort method that will sort an array of strings alphabetically. Demonstrate how to sort an array of strings by the length of each string, shortest strings first. Hint: clean, small code wins.
Write a function that takes an array of integers and returns that array rotated by N positions using Python or Ruby or JavaScript. For example, if N=2, given the input array [1, 2, 3, 4, 5, 6] the function should return [5, 6, 1, 2, 3, 4]
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