Loop in a string array and changing string

I have a string array called 'Countries' which contains [120x1]. The variable contents Canda, France, Italy, Japan, United KIngdom, and United States. (So around 15 Canda, 20 France..and so on) What I want to do is write a loop that looks into the variable 'Countries' and checks each element and replaced 'United States' with 'US'. I am new to the 'for' command, so I am not sure how to write my code. Any help would be much appreciated.

Answer 1

[Rik]

Why didn't you mention this is homework? (I have seen this exact situation from another user this week, so barring evidence to the contrary I will treat this as homework)

You don't need a loop. If no other entry contains this text you can use strrep (so watch out for "Mexican United States"), otherwise you'll need ismember.