由单一的数字矢量替换整数序列 [英] Replace sequence of integers in vector by single number
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问题描述
让 A
整数是载体,其中我想通过一个precise更换次数数字序列。
Let A
be vector of integers in which I want to replace a sequence of numbers by a precise number.
示例:
A = [ 8 7 1 2 3 4 5 1 2 3 4 5 6 7 ]
和我要替换的序列 1 2 3
按 9
。
其结果将是:
B = [ 8 7 9 4 5 9 4 5 6 7 ]
任何意见?
推荐答案
这可能是与 strfind
和 bsxfun $ C $一种方法C> -
This could be one approach with strfind
and bsxfun
-
pattern = [1 2 3];
replace_num = 9;
B = A
start_idx = strfind(A,pattern) %// Starting indices of pattern
B(start_idx) = replace_num %// Replace starting indices with replacement
B(bsxfun(@plus,start_idx(:),1:numel(pattern)-1))=[] %// Find all group
%// indices of the pattern except the starting indices and
%// then delete them
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