iOS 数组统计重复字段和次数
2019-06-21 本文已影响0人
顺其自然_Cao
NSCountedSet *set = [[NSCountedSet alloc] initWithArray:names];
for (id item in set)
{
NSLog(@"Name=%@, Count=%lu", item, (unsigned long)[set countForObject:item]);
}
结果：Name=0, Count=2
Name=1, Count=2
Name=2, Count=1
