Data structure notes pdf free download

What are the criteria for algorithm analysis? Why do we use stacks? What is a queue in data-structure? What are the various data structures available? Write a short note on the data structure. What is called data structure? Question 2. How does data structure help? Question 3. What are the common data structures? Question 4.

Is it hard to study data structure? These are the ways to arrange data so that they data items can be used efficiently in the main memory. Examples: Array, Stack, Linked List, and many more. You don't need to worry about these names. These topics will be covered in detail in the upcoming tutorials. Algorithms — Sequence of steps performed on the data using efficient data structures to solve a given problem, be it a basic or real-life-based one.

Examples include: sorting an array. So, this was all for the beginning. Data Structures and Algorithms are not new concepts. If you have done programming in any language like C, you must have come across Arrays — A data structure. And algorithms are just sequences of processing steps to solve a problem.

Thank you for being with me throughout the tutorial. I hope you enjoyed it. Since the method is based on pivotal method, the diagonal elements should not be the same number. The matrix is declared a float data type since the pivoted matrix will definitely be a float data type. This program demonstrates a very simple function.

It calls another function without any arguments and the function also does not return any value. A more complicated no return no argument function is in the next example. This program demonstrates a function call with arguments passed to the function. The function gets two arguments from the main program and finds their maximum and displays the result. The function also returns a result back to the main program. This program accepts a character and calls a function to convert it to uppercase.

The argument data type and return data type are both characters. This program demonstrates a nested function call. The main program calls a function.

The function in turn calls another function. These kinds of calls are nested function calls. This program demonstrates the recursive function usage. The program computes the greatest common divisor GCD of two integers recursively. This program demonstrates how to pass an array to a function. The program accepts three numbers in an array. The array is passed to a function that computes the average of the three numbers. The arguments are int data types while the result is a float.

This program demonstrates another interesting feature of auto. You can declare a variable with same within a function under different blocks. When the block is exited, the variable is destroyed. The program below explains the usage of different data types for auto.

Assume that we declare a variable as extern. If we use the same variable name within a function, what will happen? The local variable will take precedence over the extern variable. This is demonstrated through the following program. We have defined a variable myvar as extern and used the same in main.

This is a simple program that illustrates a structure. We have defined a structure called currency with two members such as rupees and paise. This simple program illustrates how to initialize the members of a structure.

Look at how different data types are initialized in this example. This simple program illustrates how to use a nested structure. This is a simple program that illustrates how to use a union.

By rearranging the order of usage of the members, you can prevent this. The example illustrates this. This is a simple program that illustrates an array of union.

Note that this is same as a structure variable. This simple program illustrates how to place a union inside a structure. This simple program illustrates how to use bit fields in structures. This simple program illustrates how to represent and access an array element using pointers. Note that the array name itself could be used as a pointer to the array or a separate pointer variable equated to the array can be used as the pointer to the array.

This simple program illustrates how to use pointer arithmetic to access various elements of an array. Check Here for data structures sign Important Questions.

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