modify code on class

Author: algorithmzuo

src/class01/Code06_PrintB.java renamed to src/class01/Code01_PrintBinary.java

@@ -1,6 +1,6 @@
 package class01;
 
-public class Code06_PrintB {
+public class Code01_PrintBinary {
 
 	public static void print(int num) {
 		for (int i = 31; i >= 0; i--) {

src/class01/Code01_SumOfFactorial.java renamed to src/class01/Code02_SumOfFactorial.java

@@ -1,6 +1,6 @@
 package class01;
 
-public class Code01_SumOfFactorial {
+public class Code02_SumOfFactorial {
 
 	public static long f1(int N) {
 		long ans = 0;

src/class01/Code07_Sort.java renamed to src/class01/Code03_Sort.java

@@ -1,6 +1,6 @@
 package class01;
 
-public class Code07_Sort {
+public class Code03_Sort {
 
 	public static void swap(int[] arr, int i, int j) {
 		int tmp = arr[j];

src/class01/Code02_SelectionSort.java renamed to src/class01/Code04_SelectionSort.java

@@ -2,7 +2,7 @@
 
 import java.util.Arrays;
 
-public class Code02_SelectionSort {
+public class Code04_SelectionSort {
 
 	public static void selectionSort(int[] arr) {
 		if (arr == null || arr.length < 2) {

src/class01/Code03_BubbleSort.java renamed to src/class01/Code05_BubbleSort.java

@@ -2,7 +2,7 @@
 
 import java.util.Arrays;
 
-public class Code03_BubbleSort {
+public class Code05_BubbleSort {
 
 	public static void bubbleSort(int[] arr) {
 		if (arr == null || arr.length < 2) {

src/class01/Code04_InsertionSort.java renamed to src/class01/Code06_InsertionSort.java

@@ -2,7 +2,7 @@
 
 import java.util.Arrays;
 
-public class Code04_InsertionSort {
+public class Code06_InsertionSort {
 
 	public static void insertionSort(int[] arr) {
 		if (arr == null || arr.length < 2) {

src/class01/Code05_PreSum.java renamed to src/class02/Code05_PreSum.java

@@ -1,4 +1,4 @@
-package class01;
+package class02;
 
 public class Code05_PreSum {