Arrays are one of the most common interview topics.
Here are four to patterns that are a must know.
𝟭. 𝗞𝗮𝗱𝗮𝗻𝗲'𝘀 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺 - An efficient algorithm used to find the maximum subarray sum.
𝟮. 𝗧𝘄𝗼 𝗣𝗼𝗶𝗻𝘁𝗲𝗿𝘀 - Use two pointers, e.g. left and right, typically starting at different positions, e.g., start and end of an array, and move them based on specific conditions to solve the problem.
𝟯. 𝗦𝗹𝗶𝗱𝗶𝗻𝗴 𝗪𝗶𝗻𝗱𝗼𝘄 - Expand the window by adding elements from the right until the constraint is broken. Shrink the window by removing elements from the left. Repeat until a valid window is found.
𝟰. 𝗣𝗿𝗲𝗳𝗶𝘅 𝗦𝘂𝗺 - Used to calculate the running sum of a subarray efficiently.
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Arrays are one of the most common interview topics.
Here are four to patterns that are a must know.
𝟭. 𝗞𝗮𝗱𝗮𝗻𝗲'𝘀 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺 - An efficient algorithm used to find the maximum subarray sum.
𝟮. 𝗧𝘄𝗼 𝗣𝗼𝗶𝗻𝘁𝗲𝗿𝘀 - Use two pointers, e.g. left and right, typically starting at different positions, e.g., start and end of an array, and move them based on specific conditions to solve the problem.
𝟯. 𝗦𝗹𝗶𝗱𝗶𝗻𝗴 𝗪𝗶𝗻𝗱𝗼𝘄 - Expand the window by adding elements from the right until the constraint is broken. Shrink the window by removing elements from the left. Repeat until a valid window is found.
𝟰. 𝗣𝗿𝗲𝗳𝗶𝘅 𝗦𝘂𝗺 - Used to calculate the running sum of a subarray efficiently.
—
Preparing for coding interviews? Check out neetcode.io/
6 months ago (edited) | [YT] | 1,382