How to replace new line with white space in text documents

Hello,I am trying to change all new lines in my database with white space,but codes does not work.can any one help me please.Data base is attached.

test1 = fileread('part1.txt');
newTest = sprintf(strrep(test1, '\n', ' '))

Answer 1

[Stephen23]

str = regexprep(test1,'\s+',' ');

or

str = regexprep(test1,'[\n\r]+',' ')

[Fateme Jalali]

thank u

[Andrew Mohan]

This does the trick. Thanks.