STRNUMERIC

STRNUMERIC sorts a cell array of strings in numeric order based on numbers embedded within each string.

Example:

>> str = {'Test.txt'
'Test_4_Case_1_Day_10_34.txt'
'Test_3_Case_1_Day_10_34.txt'
'Test_2_Case_1_Day_9.txt'
'Test_2_Case_1_Day_10_34.txt'
'Test_2_Case_001_Day_10_234.txt'
'Test_2_Case_001_Day_10.txt'
'Test_1_Case_33_Day_1.txt'};

>> strnumeric(str)

ans =

'Test.txt'
'Test_1_Case_33_Day_1.txt'
'Test_2_Case_1_Day_9.txt'
'Test_2_Case_001_Day_10.txt'
'Test_2_Case_1_Day_10_34.txt'
'Test_2_Case_001_Day_10_234.txt'
'Test_3_Case_1_Day_10_34.txt'
'Test_4_Case_1_Day_10_34.txt'