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2 years ago

9.6 Code Practice: Question 1

Computers and Technology

1 answer:

worty [1.4K]2 years ago

8 0

Answer:

import java.util.Random;
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
int n = 10;
int [] myArray = new int[n];
buildArray(myArray, n);
System.out.println(Arrays.toString(myArray));
}
public static void buildArray(int[] arr, int n){
for(int i=0; i < arr.length; i++){
Random rand = new Random();
arr[i] = rand.nextInt(90) +10;
}
}
}

Explanation:

Firstly, create a method buildArray that take two inputs, an array and an array size (Line 12). In the method, use random nextInt method to repeatedly generate a two digit random number within a for loop that will loop over array size number of times (Line 13-15). The expression rand.nextInt(90) + 10 will generate digits between 10 - 99.

In the main program, call the build array method by using an array and array size as input arguments (Line 8). At last, print the array after calling the buildArray method (Line 9).

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Answer:

#include <iostream> // includes input output functions

#include <string> // used for string functions

using namespace std; // identifies objects like cout , cin

int main() { // body of the main function

int index; // index position of the elements

simonPattern = "RRGBRYYBGY"; //stores simon pattern

userPattern = "RRGBBRYBGY"; //stores user pattern

int userScore = 0; // used to store the user score

// loop compares characters of user and simon patterns

for ( index = 0; userPattern[index] == simonPattern[index]; ++index) {

userScore = userScore +1; // adds to the user score

if (userPattern[index] != simonPattern[index]){

//if user and simon pattern do not match

break; } } // breaks the loop

cout << "userScore is " << userScore; // prints the user score

Explanation:

The program compares the user pattern to simon pattern character by character and keeps adding one to the user score if the characters of both simon and user patterns match. The loop breaks if the character of user pattern does not match with that of simon matter. At the end the calculated user score is displayed in the output.

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2 years ago

Define a function compute_gas_volume that returns the volume of a gas given parameters pressure, temperature, and moles. Use

jeyben [28]

Question:

Define a function compute_gas_volume that returns the volume of a gas given parameters pressure, temperature, and moles. Use the gas equation PV = nRT, where P is pressure in Pascals, V is volume in cubic meters, n is number of moles, R is the gas constant 8.3144621 ( J / (mol*K)), and T is temperature in Kelvin.

Answer:

This solution is implemented in C++

double compute_gas_volume(double P, double T, double n){

double V = 8.3144621 * n * T/P;

return V;

}

Explanation:

This line defines the function, along with three parameters

double compute_gas_volume(double P, double T, double n){

This calculates the volume

double V = 8.3144621 * n * T/P;

This returns the calculated volume

return V;

}

To call the function from the main, use:

cout<<compute_gas_volume(P,T,n);

Where P, T and n are double variables and they must have been initialized

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2 years ago

Write a program that uses the function isPalindrome given in Example 6-6 (Palindrome). Test your program on the following string

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Answer:

#include <bits/stdc++.h>

using namespace std;

bool isPalindrome(string str)

{

char a,b;

int length = str.length();

for (int i = 0; i < length / 2; i++)

{

a=tolower(str[i]);//Converting both first characters to lowercase..

b=tolower(str[length-1-i]);

if (b != a )

return false;

}

return true;

}

int main() {

string t1;

cin>>t1;

if(isPalindrome(t1))

cout<<"The string is Palindrome"<<endl;

else

cout<<"The string is not Palindrome"<<endl;

return 0;

}

Output:-

Enter the string

madam

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Enter the string

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Enter the string

The string is Palindrome

Enter the string

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The string is Palindrome

Enter the string

444244

The string is not Palindrome

Explanation:

To ignore the cases of uppercase and lower case i have converted every character to lowercase then checking each character.You can convert to uppercase also that will also work.

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The first and third.

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2 years ago

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Answer:

Check the explanation

Explanation:

the js code is as follows

function count_max_group(ar) {

if (ar.length < 2) return ar.length; // if no of elements are 2 then max groups are 2

let st = [0]; // stack to store the groups

for (let i = 1; i < ar.length; i++) {

if (ar[i] >= ar[i - 1]) st.push(i); // pushing elements if if ar[i] is greater than the previous element

for (let j = i; j > 0 && ar[j] < ar[j - 1]; j--) { // finding the max number of grps

swap(ar, j, j - 1); // swapping

if (j <= st[st.length - 1]) st.pop();

}

return st.length;

}

function swap(a, i, j) { // function to swap two variables

let t = a[i];

a[i] = a[j];

a[j] = t;

}

//sample solutions

console.log("the sample solutions are\n");

console.log("[2,1,6,4,3,7]\n");

console.log(count_max_group([2,1,6,4,3,7]));

console.log("[4,3,2,6,1]\n") ;

console.log(count_max_group([4,3,2,6,1]));

console.log("[2,4,1,6,5,9,7]\n");

console.log(count_max_group([2,4,1,6,5,9,7]));

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2 years ago