목록java Collections.sort() (1)

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[Java] Collections.sort()

class Number implements Comparable { int a; Number(int a){ this.a = a; } @Override public int compareTo(Number num) { return this.a - num.a; } } public class Test01 { public static void main(String[] args) { List list = new ArrayList(); list.add(new Number(3)); list.add(new Number(0)); list.add(new Number(15)); list.add(new Number(11)); list.add(new Number(5)); for(Number n : list) System.out.pr..
Java 2020. 8. 23. 20:21
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