How do I create a new array from this array
String[] data = {"day: monday, color: green", "day: sunday, color: blue", "day: thursday, color: red"};
that looks like this:
String[] data = {"green", "blue", "red"};
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2 Answers
First, create new array of the same size:
String[] colors = new String[data.length];
Then iterate over the source array parse each value and put it to the result. There are a lot of ways to parse your strings. It depends on how strong the parsing should be. Here is the simplest way:
for (int i = 0; i < data.length; i++) {
String[] d = data[i].split(" ");
colors[i] = d[d.length - 1];
}
No more comments. Try to understand the code yourself. It is really trivial.
Comments
I agree with what AlexR says about figuring it out for yourself. Here's another way to envision the for-loop and parse operation using the substring() method. Again, be sure to preallocate a String array to hold the results before hand, ie:
String[] result = new String[data.length];
for(int i = 0; i < data.length; i++){
// gets the substring starting on the 5th character
String color = data[i].substring(5);
// adds String to result
result[i] = color;
}
