Top-notch Strings and Arrays Function Writing Homework Help in C

Writing a Code Fragment to Perform a Specified Task in C

Write a code fragment to perform the given task; please remember that it's a fragment, therefore, you need not to show the #include statements or main(), but you must write a proper C code that can be compiled and run correctly.

Writing a Function To Sort a Multidimensional Integer Array in C

int* sortRemoveDuplicated(int input[5][2], int *num_unique_values); to sort a multi-dimensional integer array input of a fixed size 5 by 2, remove duplicated values, update num_unique_values and return the unique sorted values as an 1D array, which is dynamically allocated in the function.

Example

intinput[5][2] = { {2, 3}, {2, 3}, {2, 3}, {1, 2}, {5, 4} };

intnum_unique_values = 0;

int* output = sortRemoveDuplicated(input, &num_unique_values);

for (inti = 0; i

It should print 1 2 3 4 5.

int* sortRemoveDuplicated(int input[5][2], int *num_unique_values) {

/// Write your code here

Solution:

int*sortRemoveDuplicated(int input[5][2],int*num_unique_values){

// Find the highest number in the list in the 2D array

inthighestNumber=0;

for(int r =0; r <5; r++){

for(int c =0; c <2;c++){

if(input[r][c]>highestNumber)

highestNumber= input[r][c];

}

// Create an array that keeps track the frequencies of each number

int*frequencies =(int*)malloc(sizeof(int)*(highestNumber+1));

intnumUnique=0;

for(inti=0;i<=highestNumber;i++)

frequencies[i]=0;

for(int r =0; r <5; r++){

for(int c =0; c <2;c++){

int number = input[r][c];

if(frequencies[number]==0)

numUnique++;

frequencies[number]++;

}

// Create the sorted unique numbers

int*sortedNumbers=(int*)malloc(sizeof(int)*numUnique);

int j =0;

for(inti=0;i<=highestNumber;i++){

if(frequencies[i]>0)

sortedNumbers[j++]=i;

}

*num_unique_values=numUnique;

free(frequencies);

returnsortedNumbers;

}

Writing a Function That Reads and Stores a Line Into a C String

2.Complete the below function bool readLine(FILE* fp, char** line, int* array_size); that reads a line from a file given by the file pointer fp, stores the line into the C string *line, and updates the array size array_size if the array size of *line has changed. Your implementation should meet the following requirements:

• If *line is NULL, your function should use malloc to allocate enough memory.

• If *line is not NULL and *array_size is not large enough to store the line, you should use realloc to resize the C string.

• *array_size should be updated to reflect the array size of the character array.

• The C string *linemust be null-terminated.

boolreadLine(FILE* fp, char** line, int* array_size) {

// temp buffer, assuming a line has at most 1024 characters

chartemp[1024];

if (fgets(temp, 1024, fp)) {

// TODO: temp contains the line, your tasks are:

// 1. Handle the dynamic memory allocation for *line,

// 2. Update *array_size if necessary

// 3. Copy values from temp to *line

// Note: line is a pointer to a c-string, when you

// allocate memory, think carefully which

// variable you need to use

// Write your code below

returntrue;

}

returnfalse;

}

Solution:

boolreadLine(FILE*fp,char** line,int*array_size){

// temp buffer, assuming a line has at most 1024 characters

chartemp[1024];

if(fgets(temp,1024,fp)){

// TODO: temp contains the line, your tasks are:

// 1. Handle the dynamic memory allocation for *line,

// 2. Update *array_size if necessary

// 3. Copy values from temp to *line

// Note: line is a pointer to a c-string, when you

// allocate memory, think carefully which

// variable you need to use

// Write your code below

if(*line == NULL)

*line = malloc(sizeof(char)*1025);

elseif(*array_size

*line =realloc(*line,strlen(temp)+1);

*line[0]='\0';

strcpy(*line, temp);

*array_size=strlen(*line);

returntrue;

}

returnfalse;

}

Function Strings and Arrays Writing Homework Help in C

Writing a Code Fragment to Perform a Specified Task in C

Writing a Function To Sort a Multidimensional Integer Array in C

Example

Solution: