Java.lang.Character类 复习一下
这是修正前的排序效果:
这是修正后的排序效果:
完整示例:
以下是排序的部份代码(非全部代码:拼音首字母算法不在其中)
- import java.util.Arrays;
- import java.util.Comparator;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- public class Demo {
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- String fileNames[] = { "fss01", "fss2", "fss01_22", "fss3", "fss1", "fss10", "fss20", "fss4", "fss30", "fss21", "fss12","fss01_3" };
- char chFileNames[][] = new char[fileNames.length][];
- String[] oldSortedNames = new String[fileNames.length];
- for (int i = 0; i < fileNames.length; i++) {
- chFileNames[i] = fileNames[i].toCharArray();
- oldSortedNames[i] = fileNames[i];
- }
- // Arrays.sort(fileNames, StrLogicCmp);
- Arrays.sort(chFileNames, ChsLogicCmp);
- System.out.println("_Random_" + "\t" + "_Tradion_" + "\t" + "_Target_");
- String line;
- for (int i = 0; i < fileNames.length; i++) {
- line = fileNames[i] + (fileNames[i].length() >= 8 ? "\t" : "\t\t");
- line += oldSortedNames[i] + (oldSortedNames[i].length() >= 8 ? "\t" : "\t\t");
- line += new String(chFileNames[i]);
- System.out.println(line);
- }
- }
- static Comparator<String> StrLogicCmp = new Comparator<String>() {
- @Override
- public int compare(String o1, String o2) {
- // TODO Auto-generated method stub
- return 0;
- }
- };
- // "f01s2s22", "f1s02s2"
- static Comparator<char[]> ChsLogicCmp = new Comparator<char[]>() {
- class Int{
- public int i;
- }
- public int findDigitEnd(char[] arrChar, Int at) {
- int k = at.i;
- char c = arrChar[k];
- boolean bFirstZero = (c == '0');
- while (k < arrChar.length) {
- c = arrChar[k];
- //first non-digit which is a high chance.
- if (c > '9' || c < '0') {
- break;
- }
- else if (bFirstZero && c == '0') {
- at.i++;
- }
- k++;
- }
- return k;
- }
- @Override
- public int compare(char[] a, char[] b) {
- if(a != null || b != null){
- Int aNonzeroIndex = new Int();
- Int bNonzeroIndex = new Int();
- int aIndex = 0, bIndex = 0,
- aComparedUnitTailIndex, bComparedUnitTailIndex;
- // Pattern pattern = Pattern.compile("D*(d+)D*");
- // Matcher matcher1 = pattern.matcher(a);
- // Matcher matcher2 = pattern.matcher(b);
- // if(matcher1.find() && matcher2.find()) {
- // String s1 = matcher1.group(1);
- // String s2 = matcher2.group(1);
- // }
- while(aIndex < a.length && bIndex < b.length){
- //aIndex <
- aNonzeroIndex.i = aIndex;
- bNonzeroIndex.i = bIndex;
- aComparedUnitTailIndex = findDigitEnd(a, aNonzeroIndex);
- bComparedUnitTailIndex = findDigitEnd(b, bNonzeroIndex);
- //compare by number
- if (aComparedUnitTailIndex > aIndex && bComparedUnitTailIndex > bIndex)
- {
- int aDigitIndex = aNonzeroIndex.i;
- int bDigitIndex = bNonzeroIndex.i;
- int aDigit = aComparedUnitTailIndex - aDigitIndex;
- int bDigit = bComparedUnitTailIndex - bDigitIndex;
- //compare by digit
- if(aDigit != bDigit)
- return aDigit - bDigit;
- //the number of their digit is same.
- while (aDigitIndex < aComparedUnitTailIndex){
- if (a[aDigitIndex] != b[bDigitIndex])
- return a[aDigitIndex] - b[bDigitIndex];
- aDigitIndex++;
- bDigitIndex++;
- }
- //if they are equal compared by number, compare the number of '0' when start with "0"
- //ps note: paNonZero and pbNonZero can be added the above loop "while", but it is changed meanwhile.
- //so, the following comparsion is ok.
- aDigit = aNonzeroIndex.i - aIndex;
- bDigit = bNonzeroIndex.i - bIndex;
- if (aDigit != bDigit)
- return aDigit - bDigit;
- aIndex = aComparedUnitTailIndex;
- bIndex = bComparedUnitTailIndex;
- }else{
- if (a[aIndex] != b[bIndex])
- return a[aIndex] - b[bIndex];
- aIndex++;
- bIndex++;
- }
- }
- }
- return a.length - b.length;
- }
- };
- }