feat: Add java 8 question asked in interview

JavaDsaWithTest/src/main/java/org/practice/dsa/java8/functional_programming/interview/Reverse.java

@@ -0,0 +1,20 @@
+package org.practice.dsa.java8.functional_programming.interview;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Reverse {
+    // Given the list of strings, reverse the characters of String element of list not the order
+    public static void main(String[] args) {
+        List<String> list = Arrays.asList("Welcome", "to", "Java");
+        System.out.println(reverseString(list));
+    }
+
+    public static List<String> reverseString(List<String> list) {
+        return list.stream()
+                .map(str -> new StringBuilder(str).reverse().toString())
+                .collect(Collectors.toList());
+    }
+}