algorithm/Java
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/Java.git synced 2025-07-24 04:54:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

docs(Others): update countwords.java and crc32.java

Browse Source 
- By @yanglbme
This commit is contained in:
yanglbme
2019-02-17 20:52:00 +08:00
parent 2ceb1aa907
commit c516834ed6
2 changed files with 31 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
Others/countwords.java
View File

@ -1,13 +1,12 @@
import java.util.Scanner; import java.util.Scanner;
/** /**
* You enter a string into this program, and it will return how * You enter a string into this program, and it will return how many words were
* many words were in that particular string * in that particular string
* *
* @author Marcus * @author Marcus
*
*/ */
public class countwords{ public class CountWords {
public static void main(String[] args) { public static void main(String[] args) {
Scanner input = new Scanner(System.in); Scanner input = new Scanner(System.in);
@ -19,7 +18,8 @@ import java.util.Scanner;
} }
private static int wordCount(String s) { private static int wordCount(String s) {
if(s.isEmpty() || s == null) return 0; if (s == null || s.isEmpty())
return 0;
return s.trim().split("[\\s]+").length; return s.trim().split("[\\s]+").length;
} }

8
Others/crc32.java
View File

@ -1,7 +1,9 @@
import java.util.BitSet; import java.util.BitSet;
//Generates a crc32 checksum for a given string or byte array /**
public class crc32 { * Generates a crc32 checksum for a given string or byte array
*/
public class CRC32 {
public static void main(String[] args) { public static void main(String[] args) {
System.out.println(Integer.toHexString(crc32("Hello World"))); System.out.println(Integer.toHexString(crc32("Hello World")));
@ -16,7 +18,7 @@ public class crc32 {
int crc32 = 0xFFFFFFFF; // initial value int crc32 = 0xFFFFFFFF; // initial value
for (int i = 0; i < data.length * 8; i++) { for (int i = 0; i < data.length * 8; i++) {
if (((crc32 >>> 31) & 1) != (bitSet.get(i) ? 1 : 0)) if (((crc32 >>> 31) & 1) != (bitSet.get(i) ? 1 : 0))
crc32 = (crc32 << 1) ^ 0x04C11DB7; //xoring with polynomial crc32 = (crc32 << 1) ^ 0x04C11DB7; // xor with polynomial
else else
crc32 = (crc32 << 1); crc32 = (crc32 << 1);
} }