写一段matlab函数,把输入的字符串中数字(1000以内)改为三位数,不够大的在前面补0
时间: 2024-10-18 08:19:44 浏览: 28
要编写一个MATLAB函数来实现这个功能,可以按照以下思路设计:
```matlab
function [result, starCount] = formatThreeDigits(inputString)
% Initialize variables
inputArray = strsplit(inputString, ''); % Split string into characters
numArray = double(char(inputArray)); % Convert to numeric array (ignoring non-digit chars)
formattedNums = zeros(size(numArray)); % Initialize formatted numbers
starCount = 0; % Count of stars
% Iterate through the number array
for i = 1:length(numArray)
% Check if character is a digit and within the range
if isnumeric(numArray(i)) && numArray(i) <= 999
formattedNums(i) = numArray(i);
elseif numArray(i) == '*'
starCount = starCount + 1;
% Shift non-star digits left by one position
if i > 1
formattedNums(1:i-1) = formattedNums(2:i);
end
else
% Ignore other characters
end
end
% Combine the formatted numbers into a string
result = char(formattedNums);
% Return the result string and the count of stars
end
```
此函数首先将输入字符串分割成字符数组,然后转换为数值数组以便处理。接着遍历每个元素,如果是数字并且小于等于999,就保留原样;如果遇到星号(*),则计数并将非星号数字向左移动一位以空出位置。最后,将格式化后的数字重新组合成字符串并返回。
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