updated isogram class to final

JeevaRamanathan · JeevaRamanathan · commit 37761cf621f7 · 2025-10-02T23:44:28.000+05:30
Signed-off-by: JeevaRamanathan &lt;jeevaramanathan.m@infosys.com&gt;
diff --git a/src/main/java/com/thealgorithms/strings/Isogram.java b/src/main/java/com/thealgorithms/strings/Isogram.java
@@ -25,7 +25,7 @@
  *
  * Reference from https://en.wikipedia.org/wiki/Heterogram_(literature)#Isograms
  */
-public class Isogram {
+public final class Isogram {
     /**
      * Private constructor to prevent instantiation of utility class.
      */

Original file line number	Diff line number	Diff line change
`@@ -25,7 +25,7 @@`
`25`	`25`	`*`
`26`	`26`	`* Reference from https://en.wikipedia.org/wiki/Heterogram_(literature)#Isograms`
`27`	`27`	`*/`
`28`		`-public class Isogram {`
	`28`	`+public final class Isogram {`
`29`	`29`	`/**`
`30`	`30`	`* Private constructor to prevent instantiation of utility class.`
`31`	`31`	`*/`