DATA STRUCTURE

§ INTRODUCTION §

•DATA REPRESENTATION▪ Data .▪ Data Type .▪ Data Type in ‘C’ .▪ User-defined Type .▪ Derived Data Type .▪ DATA STRUCTURE .▪ NEED OF DATA STRUCTURE .▪ CLASSIFICATION .▪ OPERATION .

§ WHAT IS DATA ?

• Numbers ,• Alphabets ,• Symbols .

§ TYPES OF DATA ?

• Atomic data .• Composite data

.

§ ATOMIC DATA • Non-decomposible

entity

§ COMPOSITE DATA• Composible entity

§ WHAT IS DATA TYPE ?

A data type is a term which refers to the kind of data that variables may hold in a programming language .Ex: int x;

§ WHAT IS DATA TYPE IN ‘C’ ?

• Set of built in data types.• Variables to name data.• Set of operation.• Manipulation.

§ WHAT IS USER-DEFINED TYPE ? • Type definition . • Identifier .

§ WHAT IS DERIVED DATA TYPE ?

• Group of element . • Contiguous memory .

§ WHAT IS DATA STRUCTURE ?

• Organization of data . • Associativity among data element . • Accessing method . • Operation on data . • Processing alternatives for data .

§ NEEDS OF DATA STRUCTURE ?

• Close collection . • Operations . • Efficient implementation . • Linked organization . • Sequential organization . • Modification are costly .

§ CLASSIFICATION OF DATA STRUCTURE § • DATA STRUCTURE IS DIVIDED INTO TWO CATEGORIES :

* Primitive data structure . * Non-primitive data structure .

§ PRIMITIVE DATA STRUCTURE : • Programming languages . • Data objects . • Machine level instruction . • Examples :- ♦ Integers . ♦ Real . ♦ Logical data . ♦ Character data . ♦ Pointers .

§ NON-PRIMITIVE DATA STRUCTURE :

• Homogeneous data element . • Heterogeneous data element . • Examples :- ♦ Array . ♦ Structures . ♦ Union . ♦ Linked list . ♦ Stack . ♦ Queue . ♦ Tree . ♦ Graph .

§ OPERATION OF DATA STRUCTURE :-

I. Traversing .II. Searching .III. Inserting .IV. Deleting .V. Sorting .

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