removes special character from array algo is complete

C++/remove_special_characters_from_aaray.cpp

@@ -1,9 +1,14 @@
 //  Name: Shoaib Sabir
 //  Username: Shoaib019
-//  Approach: 
+//  Approach: remove_character shifts array to let by one character
+//            is_special_character checks whether character is special or not
+//            remove_special_charactes reduce size if last character is special
+//            and runs loop whenever special character finds in the array it removes
+//            find special character using is_special_character method and remove 
+//            special charactes using remove_character method
 class Solution {
 public:
-    int remove_character(char arr [], char ch, int size){
+   int remove_character(char arr [], char ch, int size){
     int i;
     for(i=0; i< size; i++)
     {
@@ -12,7 +17,7 @@ class Solution {
     }
     if(i < size)
     {
-        size -= 1;
+        size--;
         for(int j=i; j < size; j++)
         {
             arr[j] = arr[j + 1];
@@ -22,12 +27,26 @@ class Solution {
     return size;
 }
 
-void remove_special_charactes(char arr [],int size) {
-
-    for(int i=0; i< size; i++)
-    {
-        if(arr[i] < 97 && arr[i] < 122)
-        size = remove_character(arr,arr[i],size);
-    }
-}
+  bool is_special_character(char ch){
+      if((!(ch >= 97 && ch <= 122) && !(ch >= 65 && ch <= 90) ))
+          return true;
+      else
+          return false;
+  }
+
+  int remove_special_charactes(char arr [],int size) {
+      if(is_special_character(arr[size - 1]))
+      {
+          size--;
+      }
+      for(int i=0; i< size; i++)
+      {
+          if(is_special_character(arr[i]))
+          {
+              size = remove_character(arr,arr[i],size);
+              i--;
+          }
+      }
+      return size;
+  }
 };