通过其中一个变量对List 进行排序(sorting List by one of its variable)

我有一个Class1

public class Class1 { public Class(String s, int[] s1, int soc) { this.s = s; this.s1 = s1; this.soc = soc } }

我有一个Class1的List （ List<Class1> ）。 我想通过soc对这个列表进行排序，以获得最高soc第一的Class1

I have a Class1

public class Class1 { public Class(String s, int[] s1, int soc) { this.s = s; this.s1 = s1; this.soc = soc } }

I have a List of Class1 (List<Class1>). I want to sort this list by soc, to get the Class1 with highest soc first

最满意答案

使用比较器

Collections.sort(list, new Comparator<Class1>() { public int compare(Class1 c1, Class1 c2) { if (c1.soc > c2.soc) return -1; if (c1.soc < c2.soc) return 1; return 0; }});

（请注意，比较方法返回-1表示“第一个参数在排序列表中排在第一位”，0代表“他们排序相同”，1代表“第一个参数排在排序列表第二位”，并且列表被修改按排序方法）

Use a Comparator

Collections.sort(list, new Comparator<Class1>() { public int compare(Class1 c1, Class1 c2) { if (c1.soc > c2.soc) return -1; if (c1.soc < c2.soc) return 1; return 0; }});

(Note that the compare method returns -1 for "first argument comes first in the sorted list", 0 for "they're equally ordered" and 1 for the "first argument comes second in the sorted list", and the list is modified by the sort method)

通过其中一个变量对List 进行排序(sorting List by one of its variable)

我有一个Class1

public class Class1 { public Class(String s, int[] s1, int soc) { this.s = s; this.s1 = s1; this.soc = soc } }

我有一个Class1的List （ List<Class1> ）。 我想通过soc对这个列表进行排序，以获得最高soc第一的Class1

I have a Class1

public class Class1 { public Class(String s, int[] s1, int soc) { this.s = s; this.s1 = s1; this.soc = soc } }

I have a List of Class1 (List<Class1>). I want to sort this list by soc, to get the Class1 with highest soc first

最满意答案

使用比较器

Collections.sort(list, new Comparator<Class1>() { public int compare(Class1 c1, Class1 c2) { if (c1.soc > c2.soc) return -1; if (c1.soc < c2.soc) return 1; return 0; }});

（请注意，比较方法返回-1表示“第一个参数在排序列表中排在第一位”，0代表“他们排序相同”，1代表“第一个参数排在排序列表第二位”，并且列表被修改按排序方法）

Use a Comparator

Collections.sort(list, new Comparator<Class1>() { public int compare(Class1 c1, Class1 c2) { if (c1.soc > c2.soc) return -1; if (c1.soc < c2.soc) return 1; return 0; }});

(Note that the compare method returns -1 for "first argument comes first in the sorted list", 0 for "they're equally ordered" and 1 for the "first argument comes second in the sorted list", and the list is modified by the sort method)