将一个大数组拆封成若干个小数组

NSMutableArray <NSString >muary = [NSMutableArray arrayWithCapacity:10];
for (NSInteger idx = 0; idx < 101; idx ++)
{
[muary addObject:[NSString stringWithFormat:@"%ld",idx]];
}

NSInteger everyPage = 100;
NSInteger pageCount = muary.count / everyPage;
NSMutableArray <NSArray <NSString *>*>*pageAry = [NSMutableArray arrayWithCapacity:pageCount + 1];

for (NSInteger idx = 0; idx < pageCount; idx ++)
{
    NSIndexSet *Indexes = [[NSIndexSet alloc]initWithIndexesInRange:NSMakeRange(idx * everyPage, everyPage)];
    NSArray <NSString *>*subAry = [muary objectsAtIndexes:Indexes];
    NSLog(@"%@",subAry);
    [pageAry addObject:subAry];
}

NSInteger surplus = muary.count % everyPage;
NSIndexSet *Indexes = [[NSIndexSet alloc]initWithIndexesInRange:NSMakeRange(muary.count - surplus, surplus)];
NSArray <NSString *>*plusAry = [muary objectsAtIndexes:Indexes];
[pageAry addObject:plusAry];