How to make a Triangle pattern usingGiven String

How to make a Triangle pattern usingGiven String

SOURCE : StringTriangle.java

public class StringTriangle {

	public static void main(String[] args) {

		String str = "aabbcde";

		for (int i = 0; i < str.length(); i++) {

			System.out.println(str.substring(0, i + 1));

		}

	}

}

INPUT

String str = "aabbcde"

OUTPUT

a
aa
aab
aabb
aabbc
aabbcd
aabbcde

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