pi solution

Author: RashidNepal

GeeksForGeeks/replacepi.java

@@ -0,0 +1,26 @@
+//replacing pi with 3.14
+
+public class replacepi {
+   //Here we search the characterand if it match we change
+    public static String pi(String str) {
+        if(str.length()<2){
+            return str;
+        }
+        else{
+            String firsttwo=str.substring(0, 2);
+            if(firsttwo.equals("pi")){
+                return "3.14"+pi(str.substring(2));
+            }
+            else{
+                return str.charAt(0)+pi(str.substring(1));
+            }
+        }
+    }
+
+
+    public static void main(String[] args) {
+        String str="xpix";
+        String ans=pi(str);
+        System.out.println(ans);
+    }
+}