Merge pull request #20 from Naivedh/code

string reverse without changing special charchters

Author: darpanjbora

String Reversal/GFG.java

@@ -0,0 +1,44 @@
+//Reverse an array without affecting special characters
+class GFG 
+{ 
+    public static void reverse(char str[]) 
+    { 
+        // Initialize left and right pointers 
+        int r = str.length - 1, l = 0; 
+  
+        // Traverse string from both ends until 
+        // 'l' and 'r' 
+        while (l < r) 
+        { 
+            // Ignore special characters 
+            if (!Character.isAlphabetic(str[l])) 
+                l++; 
+            else if(!Character.isAlphabetic(str[r])) 
+                r--; 
+  
+            // Both str[l] and str[r] are not spacial 
+            else 
+            { 
+                char tmp = str[l]; 
+                str[l] = str[r]; 
+                str[r] = tmp; 
+                l++; 
+                r--; 
+            } 
+        } 
+    } 
+  
+    // Driver Code 
+    public static void main(String[] args)  
+    { 
+        String str = "a!!!b.c.d,e'f,ghi"; 
+        char[] charArray = str.toCharArray(); 
+  
+        System.out.println("Input string: " + str); 
+                            reverse(charArray); 
+        String revStr = new String(charArray); 
+  
+        System.out.println("Output string: " + revStr); 
+    } 
+} 
+