Solution for: excel sheet column number

Author: edyluisrey

src/leetcode/ExcelSheetColumnNumber.java

@@ -0,0 +1,15 @@
+package leetcode;
+
+public class ExcelSheetColumnNumber {
+	public int titleToNumber(String s) {
+        int  re=0;
+        int i= s.length()-1;
+        int p=0;
+        while(i>=0){
+            re+= (s.charAt(i)-64)* Math.pow(26,p);
+            i--;
+            p++;
+        }
+        return re;
+    }
+}