Add value and key in NSDictionary from NSMutableArray - objective-c

Question

I have two NSArray. They are myArray & alphabets. myArray have some value and alphabets have the list of all alphabets.
I also have a NSMutableDictionary which is called finalDic. Where I want to add myArray values according to it's first latter where the first latter will be it's key. For doing that I add an extra NSMutableArray called objArray. Below is my code.
myArray = [[NSArray alloc] initWithObjects:
#"Bangladesh",
#"France",
#"Italy",
#"Canada",
#"Austria",
#"Germany",
#"Bolivia",
#"Argentina",
#"England", nil];
NSArray *alphabets = [[NSArray alloc] initWithObjects:#"A", #"B", #"C", #"D", #"E", #"F", #"G", #"H", #"I", #"J", #"K", #"L", #"M", #"N", #"O", #"P", #"Q", #"R", #"S", #"T", #"U", #"V", #"W", #"X", #"Y", #"Z", nil];
NSMutableDictionary *finalDic = [[NSMutableDictionary alloc] init];
NSMutableArray *objArray = [[NSMutableArray alloc] init];
int i;
int k;
for (i = 0; i < [alphabets count]; i++)
{
NSString *alp = [alphabets objectAtIndex:i];
for (k = 0; k < [myArray count]; k++)
{
NSString *vlu = [myArray objectAtIndex:k];
if([[myArray objectAtIndex:k] hasPrefix:[alphabets objectAtIndex:i]])
{
[objArray addObject:[myArray objectAtIndex:k]];
}
}
if (objArray != nil)
{
[finalDic setObject:objArray forKey:[alphabets objectAtIndex:i]];
[objArray removeAllObjects];
}
}
NSLog(#"finalDic %#", finalDic);
The problem is I am not getting the accurate result. I am getting this NSLog :
finalDic {
A = (
);
B = (
);
C = (
);
D = (
);
E = (
);
F = (
);
G = (
);
H = (
);
I = (
);
J = (
);
K = (
);
L = (
);
M = (
);
N = (
);
O = (
);
P = (
);
Q = (
);
R = (
);
S = (
);
T = (
);
U = (
);
V = (
);
W = (
);
X = (
);
Y = (
);
Z = (
);
}
I debug the code and seen that after adding first key and it's value (which is objArray) the first key and value getting empty!, just before beginning 2nd for loop for B. Don't know why? Am I missing something?
Please reply if you understand my problem. A lot of thanks in advance.

Answer 1

if you step through it you will see that your finalDic is good until [objArray removeAllObjects];
FinalDic is pointing to objArray. You need to write create a temporary object or write this differently.