Convert string form to array form on Matlab

How to convert string form into array and from array to string on Matlab?

exam : '1234' ---> [1 2 3 4]

[1 2 3 4] --> '1234'

Answer 1

[madhan ravi]

sprintf('%d',1234)
str2double('1234')

Answer 2

[Jan]

[1 2 3 4] --> '1234' :

x = [1,2,3,4]
s = sprintf('%d', x)

'1234' ---> [1 2 3 4] :

s = '1234';
x = s - '0'