Built-in equipment based data search method and apparatus, and built-in equipment thereof
An embedded device, data search technology, applied in the input/output process of data processing, electrical digital data processing, special data processing applications, etc., can solve problems such as inconvenience
Active Publication Date: 2012-12-12
HUAWEI DEVICE CO LTD
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Problems solved by technology
[0003] In the process of realizing the present invention, the inventor found at least the following problems in the prior art: when searching records on the mobile phone, it is easy to operate by pressing the up and down keys to search one by one, but if there are dozens or hundreds of directories Down, it will be pressed dozens or hundreds of times, which is obviously extremely inconvenient
Press the number or letter keys to search for the first letter of the pinyin of the name. Although the search is very fast, it must rely on the number keys or letter keys. In order to increase the screen area of the current mobile phone, it is often necessary to flip or slide the cover when operating the number keys or letter keys. Operation, but can not rely on the up and down or left and right keys to operate directly, so there is also a certain degree of inconvenience
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[0017] Binary search is a commonly used search method in computers, as long as the records to be searched are ordered, binary search can be used. The dichotomy method is an efficient search method, which can find the searched records from the ordered information in the shortest time, and the operation is very simple, as long as you know the relationship between the searched records and the current record, you can find the required records from a large number of records . The basic idea of binary search is:
[0018] (1) Determine the midpoint position of the binary search interval. Express the search interval as R[low...high], R[low] and R[high] represent the positions of the two ends of the search interval, and R[low].key and R[high].key represent the positions of the two ends respectively Node keyword; R[mid] indicates the midpoint position of the search interval, and R[mid].key indicates the node keyword at the middle position.
[0019] (2) Compare the K value to be che...
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The embodiment of the invention provides a method and a device for searching data based on an embedded device and an embedded device. The method comprises the following steps: receiving dichotomy search instructions, performing dichotomy search between the prior position and an endpoint position in the former dichotomy search range, and obtaining search results. By adopting the method for searching data in the embodiment of the invention, the dichotomy search is inducted into the data search of the embedded device, the dichotomy search of storage records is performed according to user instructions, quick position of the data is realized, and the efficiency of searching the data is improved.
Description
technical field [0001] The present invention relates to the field of data retrieval, in particular to a data search method, device and embedded device based on embedded equipment. Background technique [0002] At present, embedded devices such as mobile phones and MP3 players are more and more widely used, and the storage capacity of these devices is also increasing. However, the input functions provided by these devices are very limited, as mobile phones only have direction keys (comprising: up, down, left, right keys) and number keys, and some mobile phones provide letter keys; MP3 only includes some basic playback function keys and direction keys. In the prior art, there are generally two ways for a mobile phone to query records such as text messages, names, songs, etc.: one is to press the up and down keys to search one by one in the category to which it belongs; corresponding letter keys to search. [0003] In the process of realizing the present invention, the invent...
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IPC IPC(8): G06F17/30G06F3/023
Inventor 李学强
Owner HUAWEI DEVICE CO LTD