Java Code Examples: Prime Numbers, Array Rotation, Tree Depth

Posted by on Jan 9, 2025 in Computer Engineering | 0 comments

Finding Special Prime Numbers in Java

This code finds two-digit integers where the digit ‘3’ is the most frequent digit. For example, the output will be [13, 23, 31, 37, 43, 53, 73, 83].

“`java import java.util.ArrayList; import java.util.List; import java.util.Scanner;

public class SpecialPrimeFinder {

// Method to get special prime numbers private List getSpecialPrimeNo(int digits, int frequentNo) { List resLst = new ArrayList<>(); int lowerBound = (int) Math.pow(10, digits – 1); int upperBound

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Data Visualization Techniques with Diamonds Dataset in R

Posted by on Jan 7, 2025 in Computer Engineering | 0 comments

library(tidyverse)

Visualization of Distributions

Diamonds Dataset

str(diamonds)
summary(diamonds)
  • ggplot(data = diamonds) + geom_bar(mapping = aes(x = cut))
  • diamonds %>% count(cut)
  • ggplot(data = diamonds) + geom_histogram(mapping = aes(x = carat), binwidth = 0.5)
  • diamonds %>% count(cut_width(carat, 0.5))
smaller <- diamonds %>% filter(carat < 3)
  • ggplot(data = smaller, mapping = aes(x = carat)) + geom_histogram(binwidth = 0.1)
  • ggplot(data = smaller, mapping = aes(x = carat, color = cut)) + geom_
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Network Devices: Repeaters, Hubs, Routers, Switches, Bridges

Posted by on Jan 6, 2025 in Computer Engineering | 0 comments

Repeaters

A repeater is an electronic device that operates on the physical layer of the OSI model. An amplifier cannot differentiate between the original signal and a noise signal. Repeaters do not amplify the signal; they regenerate it. When a repeater receives a signal affected by noise, it creates a copy, bit by bit, restoring it to its original strength.

Advantages of Repeaters

  • Extend the physical distance of a network.
  • Do not seriously affect network performance.

Disadvantages of Repeaters

  • Cannot
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