java怎么将字母数字组合排序 JAVA排序数字字母混合
java\u6570\u5b57\u5b57\u6bcd\u6df7\u5408\u5b57\u7b26\u4e32\u6392\u5e8fimport java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
public class Sorter {
public static void main(String[] args) {
List strs = new ArrayList();
strs.add("aa2");
strs.add("aa100");
strs.add("aa1");
strs.add("aa10");
strs.add("aa78");
System.out.println(strs);
// \u7528\u4e86\u4e00\u4e2aComparetor
Comparator com = new Comparator() {
public int compare(String o1, String o2) {
// \u524d\u97623\u4e2aIF\u4e3b\u8981\u662f\u5224\u7a7a\u7684
if (o1 == o2) {
return 0;
}
if (o1 == null) {
return 1;
}
if (o2 == null) {
return -1;
}
// \u8fd9\u91cc\u6ca1\u6709\u505a\u592a\u591a\u7684\u5224\u65ad, index \u4ee3\u8868\u7b2c\u51e0\u4e2a\u5f00\u59cb\u662f\u6570\u5b57, \u76f4\u63a5\u4ece\u540e\u9762\u904d\u5386
// \u6bd4\u5982 aa11, \u6211\u4eec\u5c31\u4f1a\u5224\u65ad\u4ece\u4e0b\u6807[2]\u5f00\u59cb\u4e3a\u4e0d\u662f\u6570\u5b57, \u5c31\u76f4\u63a5\u622a\u53d6 [2] \u540e\u9762, \u537311
int index = 0;
for (index = o1.length() - 1; index >= 0
&& (o1.charAt(index) >= '0' && o1.charAt(index) <= '9'); index--)
;
int num1 = Integer.parseInt(o1.substring(index + 1));
for (index = o2.length() - 1; index >= 0
&& (o2.charAt(index) >= '0' && o2.charAt(index) <= '9'); index--)
;
int num2 = Integer.parseInt(o2.substring(index + 1));
return num1 - num2;
}
};
Collections.sort(strs, com);
System.out.println(strs);
}
}
import java.util.ArrayList;import java.util.List;public class Sort {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubString[] nums = { "100A", "98.5", "98.5A", "34", "52", "100", "98","98.5B" };// \u5192\u6ce1\u6392\u5e8f\u6cd5\u6392\u5e8ffor (int i = 0; i = 65&& (int) (nums[j].toCharArray()[nums[j].length() - 1]) = 65&& (int) (nums[j + 1].toCharArray()[nums[j + 1].length() - 1]) ascii2) {String temp = nums[j];nums[j] = nums[j + 1];nums[j + 1] = temp;}} else if (!char1 && char2) {// \u5982\u679c\u540e\u9762\u4e00\u4e2a\u6570\u5b57\u6709\u5b57\u6bcdString temp = nums[j];nums[j] = nums[j + 1];nums[j + 1] = temp;}}}}for (int i = 0; i < nums.length; i++) {System.out.println(nums[i]);}}}
\u6211\u4e3a\u4e86\u8d4b\u503c\u65b9\u4fbf\uff0c\u7528\u7684\u662fString\u6570\u7ec4\uff0c\u4f46\u662f\u8ddf\u7528list\u6ca1\u6709\u533a\u522b\uff0c\u65b9\u6cd5\u8fd8\u662f\u4e00\u6837\u7684\uff0c\u53ea\u662f\u83b7\u53d6\u957f\u5ea6\u7684\u65f6\u5019\u8c03\u7684\u65b9\u6cd5\u4e0d\u540c\u3002\u6570\u7ec4\u7528.length, list\u7528\u7684\u662f.size()\u3002
import java.util.List;
public class AllSort {
/**
* 从数组中选出所有组合
* @param source
* @param arrayList
* @param num
*/
public static void select(char[] source, List<String> arrayList, int num) {
int lg = source.length;
char[] temp = new char[num];
System.arraycopy(source, 0, temp, 0, num);
// 首次填充数组
arrayList.add(new String(temp));
// 逐个(位置)替换方式实现不重复全选
for (int i = num; i < lg; i++) {
for (int j = 0; j < num; j++) {
char tempChar = temp[j];
temp[j] = source[i];
arrayList.add(new String(temp));
temp[j] = tempChar;
}
}
}
/**
* 全排序
* @param source
* @param start
* @param end
*/
public static void perm(char[] source, int start, int end) {
if (start == end) {// 递归出口，最简单的情况，只取出1个
for (int i = 0; i <= end; i++) {
System.out.print(source[i]);
}
System.out.println();
} else {// 多个全排列
for (int i = start; i <= end; i++) {
char temp = source[start];// 逐位交换
source[start] = source[i];
source[i] = temp;
perm(source, start + 1, end);// 递归全排列
// 还原，为下个替换做准备
temp = source[start];
source[start] = source[i];
source[i] = temp;
}
}
}
public static void main(String[] args) {
//char[] source = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'Aa-Zz...'};
char[] source = { '0', '1', '2', '3', '4','5','6','7','8','9' };
ArrayList<String> list = new ArrayList<String>();
for (int i = 1; i <= source.length; i++) {
list.clear();
//选出
select(source, list, i);
System.out.println("===========取出"+i+"个==============");
//排列
for (String str : list) {
char[] temp = str.toCharArray();
perm(temp, 0, temp.length - 1);
}
}
}
}
之前在远标java时接触过！
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绛旓細import java.util.ArrayList;import java.util.List;public class Sort {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubString[] nums = { "100A", "98.5", "98.5A", "34", "52", "100", "98","98.5B" };// 鍐掓场鎺掑簭娉...
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绛旓細import java.util.Comparator;import java.util.List;public class Sorter { public static void main(String[] args) { List<String> strs = new ArrayList<String>();strs.add("aa2");strs.add("aa100");strs.add("aa1");strs.add("aa10");strs.add("aa78");System.out.println(...
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