陣列排序（按陣列中字典的某一鍵值對）

1。普通陣列排序：

nsmutablearray *arr = [nsmutablearray arraywithobjects:@"0",@"8",@"6",@"1",nil];

nsarray *sortedarray = [arr sortedarrayusingcomparator:^nscomparisonresult(id obj1, id obj2)

if ([obj1 intvalue] < [obj2 intvalue])

return nsorderedsame;

}];nslog(@"排序後的陣列：%@",sortedarray);

2.陣列中有字典的排序：

nsmutablearray *mymutablearr = [[[nsmutablearray alloc] init] autorelease];

nsdictionary *dicone = [nsdictionary dictionarywithobjectsandkeys:@"1",@"price",@"2",@"number", nil];

nsdictionary *dictwo = [nsdictionary dictionarywithobjectsandkeys:@"6",@"price",@"5",@"number", nil];

nsdictionary *dicthree = [nsdictionary dictionarywithobjectsandkeys:@"3",@"price",@"1",@"number", nil];

nsdictionary *dicfour = [nsdictionary dictionarywithobjectsandkeys:@"4",@"price",@"3",@"number", nil];

[mymutablearr addobject:dicone];

[mymutablearr addobject:dictwo];

[mymutablearr addobject:dicthree];

[mymutablearr addobject:dicfour];

nsarray *sortdescriptors = [nsarray arraywithobject:[nssortdescriptor sortdescriptorwithkey:@"price" ascending:yes]];

[mymutablearr sortusingdescriptors:sortdescriptors];

nslog(@"排序後的陣列%@",mymutablearr);

3.對於中文的排序可以先將中文轉拼音首字母，拼音首字母裝換可以使用 pinyin.h 這個開源庫