Slicing operations in Go - Mini Project: Build & Apply

Slicing operations

📖 Scenario: You are working with a list of daily temperatures recorded over a week. You want to extract specific parts of this data to analyze trends.

🎯 Goal: Learn how to create and use slices in Go to extract parts of a list.

📋 What You'll Learn

Create a slice with exact temperature values

Create a variable for the slice start index

Use slicing syntax to extract a sub-slice

Print the extracted sub-slice

💡 Why This Matters

🌍 Real World

Slicing is useful when working with parts of data like daily temperatures, sales figures, or user inputs.

💼 Career

Understanding slicing helps in data processing, filtering, and efficient memory use in Go programming jobs.

1

Create the initial slice

Create a slice called temperatures with these exact values: 20, 22, 19, 24, 25, 23, 21

Go

// Create the slice temperatures with the given values
// Your code here

Hint

Use []int{} to create a slice with the given numbers.

2

Set the start index for slicing

Create an integer variable called start and set it to 2

Go

package main

import "fmt"

func main() {
    temperatures := []int{20, 22, 19, 24, 25, 23, 21}
    // Create start variable with value 2
    // Your code here
}

Hint

Use start := 2 to create the variable.

3

Extract a sub-slice using slicing

Create a new slice called weekendTemps that contains the elements from temperatures starting at index start up to index 5 (not including 5) using slicing syntax

Go

package main

import "fmt"

func main() {
    temperatures := []int{20, 22, 19, 24, 25, 23, 21}
    start := 2
    // Create weekendTemps slice from temperatures[start:5]
    // Your code here
}

Hint

Use sliceName := originalSlice[start:end] to get a sub-slice.

4

Print the extracted sub-slice

Use fmt.Println to print the weekendTemps slice

Go

package main

import "fmt"

func main() {
    temperatures := []int{20, 22, 19, 24, 25, 23, 21}
    start := 2
    weekendTemps := temperatures[start:5]
    // Print weekendTemps
    // Your code here
}

Hint

Use fmt.Println(weekendTemps) to display the slice.