Microsoft Interview Question for Software Engineer / Developers

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The gap buffer is a technique used by text editors that stores the entire text in a linear block of memory. It is a fairly simple technique that involves keeping track of 5 pointers and a sequential block (gap) inside the buffer structure for inserting new text. The five pointers are (1) head of the buffer, (2) start of the gap, (3) first location outside the gap, (4) end of the buffer, and (5) location (point) within the buffer. The main rule for point is that it must be within the buffer and cannot be anywhere inside the gap other than the beginning of it.

- Deepak Garg May 25, 2008 | Flag Reply

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