@@ -0,0 +1,371 @@
+package test;%0A%0Aimport main.StringAnalyser;%0Aimport org.junit.jupiter.api.Test;%0A%0Aimport static org.junit.jupiter.api.Assertions.assertEquals;%0A%0Apublic class IsUniqueInStringTest %7B%0A%0A    @Test%0A    public void testIsUniqueTrue() %7B%0A        StringAnalyser sa = new StringAnalyser();%0A        String testTrue = %22ABCDEFG%22;%0A        assertEquals(true, sa.isUnique(testTrue));%0A    %7D%0A%7D%0A

Implement the algorithm to determine if a string has all unique characters. What if you cannot use additional data structures?