更新

dev-misc/src/main/java/com/tykj/dev/misc/utils/DeviceSeqUtil.java

@@ -19,12 +19,12 @@ public class DeviceSeqUtil {
     public static void main(String[] args) {
         List<String> list=new ArrayList<>();
         list.add("a2");
-        list.add("a4");
-        list.add("a6");
-        list.add("a5");
+        list.add("c4");
+        list.add("d6");
+        list.add("c5");
         list.add("a3");
         list.add("a1");
-        compositionInterval(list);
+        System.out.println(getContinuousSeqs(list));
     }
 
     /**
@@ -234,12 +234,66 @@ public class DeviceSeqUtil {
      * @return 序列号连续组合的区间
      */
     public static List<String> getContinuousSeqs(List<String> strings){
+        List<String> results = new ArrayList<>();
         List<String> sortedString = strings.stream().sorted().collect(Collectors.toList());
         String lastSeq = sortedString.get(0);
-        for (int i = 0 ;i<sortedString.size();i++){
-
+        String first = null;
+        for (int i = 1 ;i<sortedString.size();i++){
+            String index = sortedString.get(i);
+            if (getFirstString(lastSeq).equals(getFirstString(index))) {
+                Long num1 = getLastNum(lastSeq);
+                Long num2 = getLastNum(index);
+                if (num2 == num1 + 1) {
+                    if (first==null){
+                        first = lastSeq;
+                    }
+                    if (i==sortedString.size()-1){
+                        StringBuffer stringBuffer = new StringBuffer();
+                        stringBuffer.append(first).append("-").append(lastSeq);
+                        results.add(stringBuffer.toString());
+                        first =null;
+                    }
+                } else {
+                    if (first==null) {
+                        results.add(lastSeq);
+                    }
+                    else {
+                        StringBuffer stringBuffer = new StringBuffer();
+                        stringBuffer.append(first).append("-").append(lastSeq);
+                        results.add(stringBuffer.toString());
+                        first =null;
+                    }
+                }
+            }
+            else {
+                if (first==null) {
+                    results.add(lastSeq);
+                }
+                else {
+                    StringBuffer stringBuffer = new StringBuffer();
+                    stringBuffer.append(first).append("-").append(lastSeq);
+                    results.add(stringBuffer.toString());
+                    first =null;
+                }
+            }
+            if (i==sortedString.size()-1){
+                results.add(index);
+            }
+            lastSeq = index;
         }
-        return null;
+        return results;
+    }
+
+    /**
+     * 获取字符串最后的数字
+     */
+    private static Long getLastNum(String s){
+        return Long.parseLong(s.replaceAll(".*[^\\d](?=(\\d+))", ""));
+    }
+
+    private static String getFirstString(String s){
+        String s1 = s.replaceAll(".*[^\\d](?=(\\d+))", "");
+        return s.substring(0, s.length()-s1.length());
     }
 
 }