refactor: fix typo (#5372)

Author: alxkm

src/main/java/com/thealgorithms/others/GuassLegendre.java renamed to src/main/java/com/thealgorithms/others/GaussLegendre.java

@@ -6,8 +6,8 @@
  *
  * @author AKS1996
  */
-public final class GuassLegendre {
-    private GuassLegendre() {
+public final class GaussLegendre {
+    private GaussLegendre() {
     }
 
     public static void main(String[] args) {

src/main/java/com/thealgorithms/strings/Isomorphic.java

@@ -17,22 +17,22 @@ public static boolean checkStrings(String s, String t) {
         // To mark the characters of string using MAP
         // character of first string as KEY and another as VALUE
         // now check occurence by keeping the track with SET data structure
-        Map<Character, Character> characterMap = new HashMap<Character, Character>();
-        Set<Character> trackUinqueCharacter = new HashSet<Character>();
+        Map<Character, Character> characterMap = new HashMap<>();
+        Set<Character> trackUniqueCharacter = new HashSet<>();
 
         for (int i = 0; i < s.length(); i++) {
             if (characterMap.containsKey(s.charAt(i))) {
                 if (t.charAt(i) != characterMap.get(s.charAt(i))) {
                     return false;
                 }
             } else {
-                if (trackUinqueCharacter.contains(t.charAt(i))) {
+                if (trackUniqueCharacter.contains(t.charAt(i))) {
                     return false;
                 }
 
                 characterMap.put(s.charAt(i), t.charAt(i));
             }
-            trackUinqueCharacter.add(t.charAt(i));
+            trackUniqueCharacter.add(t.charAt(i));
         }
         return true;
     }