根据年月日计星期
public static void main(String[] args) { int y =2021; int m =01; int d =21; System.out.println(caculateWeekDay(y, m, d)); } private static String caculateWeekDay(int y, int m, int d) { if (m == 1) { m = 13; y--; } if (m == 2) { m = 14; y--; } int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7 + 1; String weekstr = ""; switch (week) { case 1: weekstr = "星期一"; break; case 2: weekstr = "星期二"; break; case 3: weekstr = "星期三"; break; case 4: weekstr = "星期四"; break; case 5: weekstr = "星期五"; break; case 6: weekstr = "星期六"; break; case 7: weekstr = "星期日"; break; } return weekstr; }
人这辈子没法做太多事情,所以每做一件事都要做到精彩绝伦。
因为,这就是我的宿命。人生苦短,你明白吗?
所以这是我为人生做出的选择