随机字符串排序
超级无敌大暴雨
2019-03-18 20:38
public void testSortRandomString(){
List<String> list = new ArrayList<String>();
Integer k;
Random random = new Random();
String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < 3; i++) {
do {
for (int a = 0; a < 10; a++) {
k = random.nextInt(str.length());
stringBuilder.append(str.charAt(k));
}
}while (list.contains(stringBuilder));
System.out.println(stringBuilder);
list.add(stringBuilder.toString());
stringBuilder.delete(0,stringBuilder.length());
}
Collections.sort(list);
System.out.println("===========排序后=============");
for (String i:list) {
System.out.println("元素："+i);
}
}1回答
-
- qq_慕数据533744
- 2019-07-27 17:52:55
public void testSortString2() {
List<String> stringList = new ArrayList<String>();
Integer it;
Random random = new Random();
Random Long = new Random();
String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
StringBuilder sb = new StringBuilder();
for(int i = 0 ; i < 10 ; i++) {
do {
for (int j = 0 ,l=Long.nextInt(10);j<l; j++) {
it = random.nextInt(str.length());
sb.append(str.charAt(it));
}
}while(stringList.contains(sb));
stringList.add(sb.toString());
sb.delete(0, sb.length());
}
System.out.println("---------");
for(String s : stringList) {
System.out.println("元素:"+ s);
}
Collections.sort(stringList);
System.out.println("---------");
for(String s : stringList) {
System.out.println("元素:"+ s);
}
}
改了一下 可以不固定10个字符
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