I want to combine the array values into one string.
my arrays are like...
array1=[#"fizan",#"nike",#"pogo"];
array2=[#"round",#"rectangle",#"square"];
array3=[#"frame",#"frame",#"frame"];
I need like this...
value1 = fizan round frame
value2 = nike rectangle frame
value3 = pogo square frame
try this:
NSArray *array1= #[#"fizan",#"nike",#"pogo"];
NSArray *array2= #[#"round",#"rectangle",#"square"];
NSArray *array3= #[#"frame",#"frame",#"frame"];
NSMutableArray *array = [[NSMutableArray alloc] initWithArray:#[array1,array2,array3]];
NSMutableArray *output = [[NSMutableArray alloc] init];
NSString *a;
NSInteger count = array.count;
for (int i = 0; i<array1.count; i++) {
a = #"";
for (int j = 0; j<count; j++) {
a = [a isEqualToString: #""] ? [NSString stringWithFormat:#"%#",[[array objectAtIndex:j] objectAtIndex:i]] : [NSString stringWithFormat:#"%# %#",a,[[array objectAtIndex:j] objectAtIndex:i]];
}
[output addObject:a];
}
for (int i = 0; i < output.count; i++) {
NSLog(#"value %i -> %#",i+1,output[i]);
}
Hope this helps!
UPDATE:
NSArray *array1= #[#"fizan",#"",#"pogo"];
NSArray *array2= #[#"round",#"rectangle",#"square"];
NSArray *array3= #[#"frame",#"frame",#"frame"];
NSMutableArray *array = [[NSMutableArray alloc] initWithArray:#[array1,array2,array3]];
NSMutableArray *output = [[NSMutableArray alloc] init];
NSString *a;
NSInteger count = array.count;
for (int i = 0; i<array1.count; i++) {
a = #"";
for (int j = 0; j<count; j++) {
a = [a isEqualToString: #""] ? [NSString stringWithFormat:#"%#",[[array objectAtIndex:j] objectAtIndex:i]] : [NSString stringWithFormat:#"%# %#",a,[[array objectAtIndex:j] objectAtIndex:i]];
}
[output addObject:a];
}
for (int i = 0; i < output.count; i++) {
NSLog(#"value %i -> %#",i+1,output[i]);
}
I have tested this code. It works perfect. Check again and reconsider the issue.
Do this
NSArray *array1 = #[#"fizan", #"nike", #"pogo"];
NSString *value = [array1 componentsJoinedByString:#" "];
NSLog(#"value = %#", value);
Output will get like
value = fizan nike pogo
For your case
NSArray *completeArray = #[#[#"fizan",#"nike",#"pogo"], #[#"round",#"rectangle",#"square"], #[#"frame",#"frame",#"frame"]];
NSMutableArray *resultArray = [NSMutableArray array];
unsigned long count = 1;
for (int i = 0; i< count; i++) {
NSMutableArray *listArray = [NSMutableArray array];
for (NSArray *itemArray in completeArray) {
count = MAX(count,itemArray.count);
if (i < itemArray.count) {
[listArray addObject:itemArray[i]];
}
}
[resultArray addObject:listArray];
}
for (NSArray *itemArray in resultArray) {
NSString *value = [itemArray componentsJoinedByString:#" "];
NSLog(#"value = %#", value);
}
output
value = fizan round frame
value = nike rectangle frame
value = pogo square frame
Related
I have an array of dictionaries
for(int i = 0; i < 5; i++) {
NSMutableDictionary *_myDictionary = [NSMutableDictionary dictionary];
[_myDictionary setObject:[NSString stringWithFormat:#"%d",i] forKey:#"id"];
[_myDictionary setObject:label.text #"Name"];
[_myDictionary setObject:label1.text #"Contact"];
[_myDictionary setObject:label2.text #"Gender"];
}
[_myArray addObject:_myDictionary];
Now I want to pick a dictionary from the array whose objectForKey:#"id" is 1 or 2 or something else like there is an sql query Select * from Table where id = 2.
I know this process
int index = [_myArray count];
for(int i = 0; i < 5; i++)
{
NSMutableDictionary *_myDictionary = [NSMutableDictionary dictionaryWithDictionary:[_myArray objectAtIndex:i]];
if([[_myDictionary objectForKey:#"id"] isEqualToString:id])
{
index = i;
return;
}
}
if(index != [_myArray count])
NSLog(#"index found - %i",index);
else
NSLog(#"index not found");
Any help would be appreciated.
Thanks in Advance !!!
Try this, this is by using fast enumeration
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
for(dict in _myArray)
{
if([[dict valueForKey:#"id"] isEqualToString:#"1"])
{
return;
}
}
You should use [NSNumber numberWithInteger: i] not a NSString.
Code fore this search should look like this:
NSString *valueToFind = [NSString stringWithFormat:#"%d", intValue]; // [NSNumber numberWithInteger: intValue]
NSInteger index = [_myArray indexOfObjectPassingTest:^BOOL(NSDictionary *obj, NSUInteger idx, BOOL *stop) {
return [valueToFind isEqualToString: [obj objectForKey: #"id"]];
}];
NSDitionary *found = [_myArray objectAtIndex: index];
So I'm making a biginteger program, and I'm having a problem with adding two arrays that aren't the same length. The problem I'm having is with the add method. If I'm iterating through an array is there any way to test if element is out of bounds. I've tried testing if the element in a is equal to nil, but I still get the exception. Any help would be great thanks.
#import <Foundation/Foundation.h>
#import "MPInteger.h"
#implementation MPInteger
{
}
-(id) initWithString: (NSString *) x
{
self = [super init];
if (self) {
intString = [NSMutableArray array];
for (int i = 0; i < [x length]; i++) {
NSString *ch = [x substringWithRange:NSMakeRange(i, 1)];
[intString addObject:ch];
}
}
return self;
}
-(NSString *) description
{
return self.description;
}
- (MPInteger *) add: (MPInteger *) x {
NSMutableArray *a = self->intString;
NSMutableArray *b = x->intString;
NSMutableArray *c = [NSMutableArray array];
NSInteger arrayCount;
if (a < b) {
arrayCount = [b count];
} else {
arrayCount = [a count];
}
int num = 10;
int carry = 1;
NSNumber *total;
NSNumber *carrySum;
for (int i = 0; i < arrayCount; i++) {
if (a[i] == nil) {
total = #([b[i] intValue]);
[c addObject:total];
} else if (b[i] == nil) {
total = #([a[i] intValue]);
[c addObject:total];
} else {
total = #([a[i] intValue] + [b[i] intValue]);
[c addObject:total];
}
}
for (NSInteger j = [c count]-1; j >=0; j--) {
if ([c[j] intValue] >= num) {
total = #([c[j] intValue] - num);
carrySum = #([c[j-1] intValue] + carry);
[c replaceObjectAtIndex:j withObject:total];
[c replaceObjectAtIndex:j-1 withObject: carrySum];
}
}
NSString *str = [c componentsJoinedByString:#""];
NSLog(#"%#", str);
return x;
}
-(MPInteger *) multiply: (MPInteger *) x
{
NSMutableArray *a = self->intString;
NSMutableArray *b = x->intString;
NSMutableArray *c = [NSMutableArray array];
NSMutableArray *sum = [NSMutableArray array];
NSNumber *total;
NSNumber *carrySum;
int num = 10;
NSNumber *endZero = 0;
NSInteger bottomCount = [b count]-1;
while (bottomCount != -1) {
for (int i = 0; i < [a count]; i++) {
total = #([a[i] intValue] * [[b objectAtIndex:bottomCount] intValue]);
if (bottomCount == [b count] -1) {
[c addObject:total];
} else {
[c replaceObjectAtIndex:i withObject:total];
}
}
for (NSInteger j = [c count]-1; j>=0; j--) {
NSString *carry = [NSString stringWithFormat:#"%d", [c[j] intValue]];
NSString *carry2 = [carry substringToIndex:1];
int carryFinal = [carry2 intValue];
NSString *carry3 = [carry2 stringByAppendingString:#"0"];
int carry4 = [carry3 intValue];
if ([c[j] intValue] >= num) {
total = #([c[j] intValue] - carry4);
carrySum = #([c[j-1] intValue] + carryFinal);
[c replaceObjectAtIndex:j withObject:total];
[c replaceObjectAtIndex:j-1 withObject: carrySum];
} else {
if(j == 0) {
if (bottomCount == [b count] -1) {
bottomCount = bottomCount - 1;
NSString *str = [c componentsJoinedByString:#""];
[sum addObject: str];
} else {
[c addObject:#([endZero intValue])];
bottomCount = bottomCount - 1;
NSString *str = [c componentsJoinedByString:#""];
[sum addObject: str];
}
}
}
}
}
NSMutableArray *finalSum = [NSMutableArray array];
MPInteger *ele1;
MPInteger *ele2;
MPInteger *eleSum;
NSNumber *endZ= #(0);
[finalSum insertObject:endZ atIndex:0];
for (int k = 0; k < [sum count]; k++) {
NSString *str= [NSString stringWithFormat:#"%d", [sum[k] intValue]];
NSString *str2 = [NSString stringWithFormat:#"%d", [sum[k+1] intValue]];
ele1 = [[MPInteger alloc] initWithString:str];
ele2 = [[MPInteger alloc] initWithString:str2];
eleSum = [ele1 add: ele2];
NSLog(#"%#", eleSum);
}
NSLog(#"%#", sum);
return self;
}
Updated this
for (int i = 0; i < arrayCount; i++) {
if (a[i] == nil) {
total = #([b[i] intValue]);
[c addObject:total];
} else if (b[i] == nil) {
total = #([a[i] intValue]);
[c addObject:total];
} else {
total = #([a[i] intValue] + [b[i] intValue]);
[c addObject:total];
}
}
has now become:
NSMutableArray *c = a.count > b.count ? [a mutableCopy] : [b mutableCopy];
NSArray *shortestArray = a.count > b.count ? b : a;
[shortestArray enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(NSNumber *currentNumber, NSUInteger idx, BOOL *stop) {
c[idx] = #(currentNumber.integerValue + [c[idx] integerValue]);
NSLog(#"%#", c[idx]);
}];
What I think I need to do is every index that is in array a and not b or vise versa, is add beginning zeros, but I don't know how to do that.
I printed out what it does after each iteration and it gives:
2013-09-02 12:31:42.630 Asgn1[42471:303] 5
2013-09-02 12:31:42.632 Asgn1[42471:303] 3
2013-09-02 12:31:42.632 Asgn1[42471:303] 1
And a final answer of:
2013-09-02 12:31:42.633 Asgn1[42471:303] 353
For the code that is failing would it not be simpler to take a mutableCopy of the large array and then loop over the smaller array for the calculations?
Perhaps something like this:
NSMutableArray *c = a.count > b.count ? [a mutableCopy] : [b mutableCopy];
NSArray *shortestArray = a.count > b.count ? b : a;
[shortestArray enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(NSNumber *currentNumber, NSUInteger idx, BOOL *stop) {
c[idx] = #(currentNumber.integerValue + [c[idx] integerValue]);
}];
I want to make a method which gives reverse of string.suppose I pass a NSString "Welcome to Objective C" in method and that method return a reverse of string like "C Objective to Welcome" not "C evitcejbO ot emocleW" without the use of componentsSeparatedByString method.
Is it possible to do with Objective c..?
Please help.
You can enumerate strings by words.
NSString *string = #"Welcome to Objective-C!";
NSMutableArray *words = [NSMutableArray array];
[string enumerateLinguisticTagsInRange:NSMakeRange(0, [string length])
scheme:NSLinguisticTagSchemeTokenType
options:0
orthography:nil
usingBlock:^(NSString *tag, NSRange tokenRange, NSRange sentenceRange, BOOL *stop) {
[array addObject:[string substringWithRange:tokenRange]];
}];
NSMutableString *reverseString = [[NSMutableString alloc] init];
for (NSString *word in [words reverseObjectEnumerator]){
[reverse appendString:word];
}
NSLog(#"%#", reverseString);
This will print...
"!C-Objective to Welcome"
You can change the options to omit whitespaces and stuff...
I used below method for reversing string in iOS
- (NSString *)reverseString:(NSString *)stringToReverse
{
NSMutableString *reversedString = [NSMutableString stringWithCapacity:[stringToReverse length]];
[stringToReverse enumerateSubstringsInRange:NSMakeRange(0, [stringToReverse length])
options:(NSStringEnumerationReverse | NSStringEnumerationByComposedCharacterSequences)
usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
[reversedString appendString:substring];
}];
return reversedString;
}
Sorry I misread your question earlier. I did it using a series of loops, my answer is messier than Fogmeister but I wanted to give it a shot to see if I could do it.
NSString *str = #"This is a test";
NSMutableArray *array = [[NSMutableArray alloc] init];
for(int i = 0; i < [str length]; i++)
{
char sTest = [str characterAtIndex:i];
if(sTest == ' ')
{
[array addObject:[NSNumber numberWithInt:i]];
}
}
NSInteger iNext = [[array objectAtIndex:[array count]-1] integerValue];
iNext+=1;
if(iNext < [str length])
{
[array addObject:[NSNumber numberWithInt:iNext]];
}
NSMutableArray *wordArray = [[NSMutableArray alloc] init];
for(int i = 0; i < [array count]; i++)
{
if (i == 0)
{
int num = [[array objectAtIndex:i] integerValue];
NSString *s = [[str substringFromIndex:0] substringToIndex:num];
[wordArray addObject:s];
}
else if(i == [array count]-1)
{
int prev = [[array objectAtIndex:i-1] integerValue]+1;
int num = [str length];
NSString *s = [[str substringToIndex:num] substringFromIndex:prev];
[wordArray addObject:s];
}
else
{
int prev = [[array objectAtIndex:i-1] integerValue]+1;
int num = [[array objectAtIndex:i] integerValue];
NSString *s = [[str substringToIndex:num] substringFromIndex:prev];
[wordArray addObject:s];
}
}
NSMutableArray *reverseArray = [[NSMutableArray alloc]init];
for(int i = [wordArray count]-1; i >= 0; i--)
{
[reverseArray addObject:[wordArray objectAtIndex:i]];
}
NSLog(#"%#", reverseArray);
Here i have done with replacing character with minimal number of looping. log(n/2).
NSString *string=#"Happy World";
NSInteger lenth=[string length];
NSInteger halfLength=[string length]/2;
for(int i=0;i<halfLength;i++)
{
NSString *leftString=[NSString stringWithFormat:#"%c",[string characterAtIndex:i]];
NSString *rightString=[NSString stringWithFormat:#"%c",[string characterAtIndex:(lenth-i-1)]];
string= [string stringByReplacingCharactersInRange:NSMakeRange(i, 1) withString:rightString];
string=[string stringByReplacingCharactersInRange:NSMakeRange((lenth-i-1), 1) withString:leftString];
}
NSLog(#"%#",string);
Try This , It's working perfect as per your expectation ,
Call Function :-
[self reversedString:#"iOS"];
Revers String Function :-
-(void)reversedString :(NSString *)reversStr
{ // reversStr is "iOS"
NSMutableString *reversedString = [NSMutableString string];
NSInteger charIndex = [reversStr length];
while (charIndex > 0) {
charIndex--;
NSRange subStrRange = NSMakeRange(charIndex, 1);
[reversedString appendString:[reversStr substringWithRange:subStrRange]];
}
NSLog(#"%#", reversedString); // outputs "SOi"
}
Hope So this is help for some one .
There is no API to do that, if that's what you are asking.
You can always iterate through the string looking for white spaces (or punctuation, it depends on your needs), identify the words and recompose your "reversed" message manually.
Following this code:
In ViewController.m
double kk[2][2] = {{1,2},{5,6}};
if (!matrix1Col) {
matrix1Col = [NSMutableArray array];
}
for (int i=0; i<2; i++) {
[matrix1Row removeAllObjects];
if (!matrix1Row) {
matrix1Row = [NSMutableArray array];
}
for (int j=0 ; j<2; j++) {
[matrix1Row insertObject:[NSNumber numberWithDouble:kk[i][j]] atIndex:j];
}
[matrix1Col insertObject:matrix1Row atIndex:i];
}
self.label100.text = [NSString stringWithFormat:#"%f",[[[matrix1Col objectAtIndex:0] objectAtIndex:0] doubleValue]];
self.label110.text = [NSString stringWithFormat:#"%f",[[[matrix1Col objectAtIndex:1] objectAtIndex:0] doubleValue]];
self.label101.text = [NSString stringWithFormat:#"%f",[[[matrix1Col objectAtIndex:0] objectAtIndex:1] doubleValue]];
self.label111.text = [NSString stringWithFormat:#"%f",[[[matrix1Col objectAtIndex:1] objectAtIndex:1] doubleValue]];`
I wanna show object in NSMutableArray of matrix which receive value from matrix of double in label.
And my all label must show as following ->label100 show 1 ->label110 show 5 ->label101 show 2 and ->label111 show 6
but It shows ->label100 show 5 ->label110 show 5 ->label101 show 6 and ->label111 show 6
How can I do?
The problem is that you're always overwriting already inserted objects, as you insert the row many times in the same loop. That's how I would write it:
double kk[2][2] = {{1,2},{5,6}};
NSMutableArray* matrix= [NSMutableArray new];
for(unsigned int i=0; i<2; i++)
{
NSMutableArray* row= [NSMutableArray new];
for(unsigned int j=0; j<2; j++)
{
[row addObject: #(kk[i][j]) ];
}
[matrix addObject: row];
}
I am trying to display the an array with different factors of a number ("prime"). But instead of giving me the int numbers I always get 0,1,2,3,4,5,... .
factors.text = #"";
int factorsNumber;
NSMutableArray *array;
array = [NSMutableArray arrayWithCapacity:5];
for (factorsNumber=1; factorsNumber<=prime; factorsNumber++) {
if (prime%factorsNumber == 0) {
[array addObject:[NSString stringWithFormat:#"%d", factorsNumber]];
}
}
for (int i = 0; i < [array count]; i++) {
[array replaceObjectAtIndex:1 withObject:#"4"];
NSString *temp = [NSString stringWithFormat:#"%d, ", i, [[array objectAtIndex:i] intValue]];
factors.text = [factors.text stringByAppendingString:temp];
}
Replace
NSString *temp = [NSString stringWithFormat:#"%d, ", i, [[array objectAtIndex:i] intValue]];
with
NSString *temp = [NSString stringWithFormat:#"%d, ", [[array objectAtIndex:i] intValue]];
The problem was you were only printing the array index, not the value.