去除数组中重复的元素 (也可以用元组)
-(NSMutableArray*)clearnRepaleArray:(NSMutableArray *)replaceArr{
NSMutableArray *dataArry = [[NSMutableArrayalloc]init];
for (NSString *strin replaceArr) {
if (![dataArry containsObject:str]) {
[dataArry addObject:str];
}
}
return dataArry;
}
//截取数组某个下标前所有元素
-(NSMutableArray*)cutArrIndex:(NSInteger)index cutArry:(NSMutableArray*)oldArr{
NSMutableArray *arr = [NSMutableArrayarray];
if ([oldArr isKindOfClass:[NSArrayclass]]) {
for(int i=0;i<index+1;i++){
[aarr addObject:oldArr[i]];
}
}
return arr;
}