🔧 Day 16 - Slicing,for loop and nested loop

🕛 Zeit seit Veröffentlichung: 41 Tage, 2 Stunden 0 Minuten
📆 Veröffentlicht am: 04.12.2024 um 16:16 Uhr
Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to

Slicing:

Slicing is a programming technique used in Python to extract a portion of a sequence. By specifying a range of indices, you can retrieve specific parts of the sequence without altering the original data.

Example:

name=[2,8]

Step operator:

A step operator refers to the ability to specify an increment for iteration in loops. In Python, this is often used with the range() function, which allows specifying a step to control how the loop variable changes after each iteration.

Example:

name[2:8:3]
3 is a step operator.

Program using two variable:

start,end= 1,6
while end>1:
    for num in range(start,end):
        print(num, end=" ")
    print()
    end-=1

Same program using one variable:

end= 6
while end>1:
    for num in range(1,end):
        print(num, end=" ")
    print()
    end-=1

*Same program without using variable or using nested loop:
*

for end in range(6,1,-1):
    for num in range(1,end):
        print(num, end=" ")
    print()

Output:

Nested loop:

A nested for loop is a loop inside another loop.

Syntax:

for outer in outer_iterable:
    for inner in inner_iterable:

1.The outer loop runs first.
2.For every iteration of the outer loop, the inner loop runs completely.
3.When the inner loop finishes, the outer loop proceeds to its next iteration.

for row in range(2,7):
    for col in range(1,row):
        print(col, end=' ')
    print()

for row in range(5):
    for col in range(5-row):
        print(col+1, end=' ')
    print()

for row in range(5):
    for col in range(5-row):
        print((col+1)*2, end=' ')
    print()

for row in range(5):
    for col in range(5-row):
        print((col+1)*(row+1), end=' ')
    print()

Task:

(https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3v84djylxrixjnllx8hq.jpg)

for row in range(5):
    for col in range(5-row):
        print((col+1)*3, end=" ")
    print()

3 6 9 12 15 
3 6 9 12 
3 6 9 
3 6 
3

for row in range(5):
    for col in range(row+1):
        print(5-col, end=' ')
    print()

...

🔧 Struggling with JavaScript loops! When I try restarting i in a for or while loop with setTimeout, things go wrong. The for loop doesn’t restart as expected. Any tips on managing loop resets without breaking logic?

🕛 19 Tage, 0 Stunden 7 Minuten
📆 26.12.2024 um 17:44 Uhr
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📰 CraSSh is a cross-browser purely declarative DoS relying on poor nested CSS var() and calc() handling in modern browsers.

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🔧 Day 16 - Slicing,for loop and nested loop

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