tableview - objective C update title for UITableView sections -

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i have tableview multi sections, each section has title number, want insert new sections press "add new" button in each of sections.

for example, when pressed "add new" button in section one, add new section between section 1 , origin section 2, origin section 2's title still "title - 2" (it should title - 3), if scroll tableview, 2nd title-2 not changed title-3

title - 1 section 1 = add new  title - 2 section 2 = add new  title - 2 section 2 = add new  title - 3 section 3 = add new


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