ios - how to assign 3 different colour to rows in an order and reverse that order -

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i designing app using table view. here have assign 3 different colours cell of tableview simultaneously... here comes problem after assigning these colours next row have again assign same colours in reverse order. example have 3 colours sequence in need assign these colours : red - green - blue - blue - green - red - red - green - blue - blue - green - red... , on. here lets don't know how many rows there sequence should go on only... please help!!!

declare below array global array : 

 nsmutablearray *colorarray;

viewdidload function :

 colorarray = [[nsmutablearray alloc] initwithobjects:[uicolor redcolor],[uicolor greencolor],[uicolor bluecolor],[uicolor bluecolor], [uicolor greencolor], [uicolor redcolor], nil];

cellforrowatindexpath method :

cell.backgroundcolor = [colorarray objectatindex:indexpath.row % 5];

and done :).


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