// 判断是否为闰年
- (BOOL)judgeIsLeapyears:(NSInteger)year{
if ((year %4 == 0 && year % 100 != 0) || year % 400 == 0) {
return YES;
}else{
return NO;
}
}
- (NSInteger)judgeDate:(NSString *)date{
// 此处使用的日期格式为xxxx-xx-xx
NSArray *array = [date componentsSeparatedByString:@"-"];
NSInteger year = [array[0] integerValue];
NSInteger month = [array[1] integerValue];
NSInteger day = [array[2] integerValue];
BOOL isLeapyear = [self judgeIsLeapyears:year];
NSInteger FebDays;// 二月天数
NSInteger n = 0;
if (isLeapyear) {
FebDays = 29;
}else{
FebDays = 28;
}
switch (month) {
case 1:n=day;break;
case 2:n=31+day;break;
case 3:n=31+FebDays+day;break;
case 4:n=31+FebDays+31+day;break;
case 5:n=31+FebDays+31+30+day;break;
case 6:n=31+FebDays+31+30+31+day;break;
case 7:n=31+FebDays+31+30+31+30+day;break;
case 8:n=31+FebDays+31+30+31+30+31+day;break;
case 9:n=31+FebDays+31+30+31+30+31+31+day;break;
case 10:n=31+FebDays+31+30+31+30+31+31+30+day;break;
case 11:n=31+FebDays+31+30+31+30+31+31+30+31+day;break;
case 12:n=31+FebDays+31+30+31+30+31+31+30+31+30+day;break;
}
NSInteger num = (year-1)+(year-1)/4-(year-1)/100+(year-1)/400+n;
return num % 7;// 1-6对应星期一到星期六，0为星期天
}
