NSArray *array1 = [NSArray arrayWithObjects:@"a", @"b", @"c", nil nil]; NSArray *array2 = [NSArray arrayWithObjects:@"b", @"a", @"c", nil nil]; bool bol = false;  //創建倆新的數組 NSMutableArray *oldArr = [NSMutableArray arrayWithArray:array1]; NSMutableArray *newArr = [NSMutableArray arrayWithArray:array2];  //對數組1排序。 [oldArr sortUsingComparator:^NSComparisonResult(id obj1, id obj2){   return obj1 > obj2; }]; ////上個排序好像不起作用，應采用下面這個[oldArr sortUsingComparator:^NSComparisonResult(id obj1, id obj2){return [obj1 localizedStandardCompare: obj2];}]; //對數組2排序。 [newArr sortUsingComparator:^NSComparisonResult(id obj1, id obj2){    return obj1 > obj2;    }]; ////上個排序好像不起作用，應采用下面這個[newArr sortUsingComparator:^NSComparisonResult(id obj1, id obj2){return [obj1 localizedStandardCompare: obj2];}]; if (newArr.count == oldArr.count) {      bol = true;   for (int16_t i = 0; i < oldArr.count; i++) {          id c1 = [oldArr objectAtIndex:i];     id newc = [newArr objectAtIndex:i];         if (![newc isEqualToString:c1];) {      bol = false;      break;      }    }  }  if (bol) {    NSLog(@"兩個數組的內容相同！");  }  else {    NSLog(@"兩個數組的內容不相同！");  }