Array Introduction

Lesson 4/45

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Data Structures and Algorithms Arrays

Array Introduction

Lesson 4/45

Array Introduction

A fundamental data structure that stores elements of the same type in contiguous memory locations, allowing for efficient index-based access.

Time

Access: O(1), Search: O(N)

Space

O(N) for storage

Key Principle 1

Contiguous memory allocation

Key Principle 2

Fixed size (static arrays)

Key Principle 3

Index-based random access

Key Principle 4

Homogeneous data elements

ARRAY_LAB v1.0
ARRAY:
Hints
• Drag panel headers to rearrange
• Hover over elements for details
• Use Play to watch execution
Current Step
An array is a collection of elements stored at contiguous memory locations.
Playback Controls
Speed
STEP 1 / 4
Memory View ⠿
SIZE5
TYPEStatic
ADDRESS0x7ffee3
Data Tracker ⠿
✓ ACTIVE PROCESS
INIT...
Logic Tracker ⠿
1// Initialize an array of size 5
2int arr[5] = {10, 20, 30, 40, 50};
3// Accessing element at index 2
4int value = arr[2]; // value is 30
5// Arrays are contiguous in memory
10
0x7f0
[0]
20
0x7f4
[1]
30
0x7f8
[2]
40
0x7f12
[3]
50
0x7f16
[4]

Loading Lab...

DATA STRUCTURES • ALGORITHMS

Array Introduction

A fundamental data structure that stores elements of the same type in contiguous memory locations, allowing for efficient index-based access.

Time

Access: O(1), Search: O(N)

Space

O(N) for storage

Key Principle 1

Contiguous memory allocation

Key Principle 2

Fixed size (static arrays)

Key Principle 3

Index-based random access

Key Principle 4

Homogeneous data elements

ARRAY_LAB v1.0
ARRAY:
Hints
• Drag panel headers to rearrange
• Hover over elements for details
• Use Play to watch execution
Current Step
An array is a collection of elements stored at contiguous memory locations.
Playback Controls
Speed
STEP 1 / 4
Memory View ⠿
SIZE5
TYPEStatic
ADDRESS0x7ffee3
Data Tracker ⠿
✓ ACTIVE PROCESS
INIT...
Logic Tracker ⠿
1// Initialize an array of size 5
2int arr[5] = {10, 20, 30, 40, 50};
3// Accessing element at index 2
4int value = arr[2]; // value is 30
5// Arrays are contiguous in memory
10
0x7f0
[0]
20
0x7f4
[1]
30
0x7f8
[2]
40
0x7f12
[3]
50
0x7f16
[4]