数组的排序

//按升序排列数组

NSArray*arr=[NSArray arrayWithObjects:@"1",@"3",@"2",@"4",@"6",@"7",@"5",@"0",nil];

NSArray*m=[arrsortedArrayUsingComparator:^(idobj1,idobj2){

if(NSOrderedDescending==[obj1compare:obj2])

{

return(NSComparisonResult)NSOrderedDescending;

}

if(NSOrderedAscending==[obj1compare:obj2])

{

return(NSComparisonResult)NSOrderedAscending;

}

return(NSComparisonResult)NSOrderedSame; }

];

NSLog(@"m -->>%@",m );