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Secure Financial Transactions
Problem You work for a financial services company that handles transactions involving 32-bit signed integer amounts. Your goal is to enhance security by implementing an additional check: reverse the digits of a given transaction amount to create a new reference code. If reversing the digits results in a value outside the valid range of transaction amounts, which lies between -2,147,483,648 and 2,147,483,647, then return a code indicating the operation is invalid. Otherwise, return the reversed amount as the reference code. Assume the environment does not allow you to store 64-bit integers (signed or unsigned). ...
Designing Zigzag Signs
Problem You’re a shop sign designer, designing a dynamic digital sign for a trendy food truck called Burrito Truck. To catch the attention of hungry passersby, you want to display the restaurant’s name in a visually striking zigzag pattern. P A H N A P L S I I G Y I R And then read line by line: "PAHNAPLSIIGYIR " Write the code that will take a string and make this conversion given a number of rows: ...
DNA Genes Regulation
Problem Imagine you’re working with DNA sequences to uncover regions critical for enzyme binding and gene regulation. Your task is to develop an algorithm that, given a DNA strand represented as a string (e.g., “AGCTTTCGA”), locates and returns the longest contiguous palindromic segment. Identifying this region is key because palindromic sequences in DNA often serve as specific recognition sites for enzymes and play a role in forming secondary structures that influence biological functions. ...
Sales Of Two Departments
Problem You are managing two different departments within a company that have collected sales data. The first department (hardware) has recorded sales figures for ‘h’ number of products, while the second department (software) has recorded sales figures for ’s number of products. Both sets of data are sorted in ascending order. you are asked to find the median of these two sorted sales data (arrays) The overall run time complexity should be O(log (m+n)). ...
Removing Duplicate Words From News Summaries
Problem You are building a news collection app that fetches articles from various sources and presents them in a summarized form to users, so they can quickly grasp the main points without having to read the full article. One important feature of your app could be to remove duplicate words or phrases from these summaries while still retaining as much information as possible. Example 1: Input: s = “xyzxyzyy” Output: 3 Explanation: The answer is “xyz”, with the length of 3. ...