Search and find operations in Intro to Computing - Flowchart & Logic Diagram

Process Overview

Search and find operations help us look for a specific item inside a list or collection. This process checks each item one by one until it finds the target or finishes checking all items.

Flowchart

Set index to 0

Yes No↓

index

Yes No↓

Increase index by 1

↩(loop back to 'Is index < length of list?')

This flowchart shows the step-by-step process of searching for a target value in a list by checking each item one by one until the target is found or the list ends.

Step-by-Step Trace - 10 Steps

Step 1: Start search with index set to 0

Step 2: Check if index (0) is less than list length (4)

Step 3: Compare list[0] (3) with target (1)

Step 4: Increase index to 1

Step 5: Check if index (1) is less than list length (4)

Step 6: Compare list[1] (7) with target (1)

Step 7: Increase index to 2

Step 8: Check if index (2) is less than list length (4)

Step 9: Compare list[2] (1) with target (1)

Step 10: End search with result Found

Diagram

List: [3, 7, 1, 9]
Index: 0 -> 3 (checked)
Index: 1 -> 7 (checked)
Index: 2 -> 1 (target found)
Index: 3 -> 9 (not checked)

This diagram shows the list items and the index positions checked during the search. The target value 1 is found at index 2 after checking previous items.

Flowchart Quiz - 3 Questions

What happens if the target is not in the list?

A The search finds a random item

B The search stops immediately

C The search checks all items and ends with 'Not Found'

D The search repeats the first item

Key Result

Search and find operations work by checking each item one by one until the target is found or the list ends.