refactor 6

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_6.java

@@ -18,31 +18,32 @@
  */
 
 public class _6 {
-
-	public String convert(String s, int numRows) {
-		StringBuilder[] sb = new StringBuilder[numRows];
-		char[] c = s.toCharArray();
-		int len = s.length();
-		for (int i = 0; i < numRows; i++) {
-			sb[i] = new StringBuilder();//this is an important step to initialize it
-		}
-		int i = 0;
-		while (i < len) {
-			for (int index = 0; index < numRows && i < len; index++) {
-				sb[index].append(c[i++]);// vertically down
+	public static class Solution1 {
+		public String convert(String s, int numRows) {
+			StringBuilder[] sb = new StringBuilder[numRows];
+			char[] c = s.toCharArray();
+			int len = s.length();
+			for (int i = 0; i < numRows; i++) {
+				sb[i] = new StringBuilder();//this is an important step to initialize it
 			}
-
-			for (int index = numRows - 2; index >= 1 && i < len; index--) {
-				/**Why it should start from numRows - 2? Think of the example when numRows = 3
-				 the starting point of obliquely going up is 1, which is numRows-2.*/
-				sb[index].append(c[i++]);// obliquely up
+			int i = 0;
+			while (i < len) {
+				for (int index = 0; index < numRows && i < len; index++) {
+					sb[index].append(c[i++]);// vertically down
+				}
+
+				for (int index = numRows - 2; index >= 1 && i < len; index--) {
+					/**Why it should start from numRows - 2? Think of the example when numRows = 3
+					 the starting point of obliquely going up is 1, which is numRows-2.*/
+					sb[index].append(c[i++]);// obliquely up
+				}
 			}
-		}
 
-		for (i = 1; i < numRows; i++) {
-			sb[0].append(sb[i]);
+			for (i = 1; i < numRows; i++) {
+				sb[0].append(sb[i]);
+			}
+			return sb[0].toString();
 		}
-		return sb[0].toString();
 	}
 
 }