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How can I convert a char into numbers

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me
me 2015-11-6
关闭： MATLAB Answer Bot 2021-8-20
if i have a char of numbers at a point in a cell .... say 123519. how can i change it into numbers(its actually a time). how can i then write the numbers in hr:min:sec format so that i have 12:35:19... is there a simpler way I can get that same format?

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Walter Roberson
Walter Roberson 2015-11-6
mycell = {'123519', '123525', '041148'}
result = regexprep(mycell, '(\d\d)(\d\d)(\d\d)', '$1:$2:$3');

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