Code Line
stringclasses 57
values | User Explanation
stringclasses 692
values | Line-Explanation in PCEX
stringclasses 131
values | Annotation Score
float64 1
5
⌀ |
|---|---|---|---|
maxValue = values[i];
|
store the biggest number in the maxValue
|
This statement sets the maximum value to value of the element at index i of the array.
| 3 |
System.out.println("Maximum value: " + maxValue);
|
print the maxValue in the output screen
|
This statement prints the maximum value of the array to the default standard output stream.
| 4 |
if (values[i] > maxValue) {
|
check the condition whether its true or not
|
We need to compare the value at the index i of the array with the maximum value stored in variable maxValue.
| 1 |
if (values[i] > maxValue) {
|
check the condition whether its true or not
|
If the value at that index is larger than the maximum value, then we need to set the maximum value to the value of the element at index i.
| 1 |
int num = 1234;
|
Assign/initialize the number to be printed from left to right.
|
We need variable num to store the integer that we want to print its digits.
| 2 |
} while (num > 0);
|
Begin a loop while the number to printed is greater than 0.
|
We need to check for termination conditions to avoid infinite loops.
| 2 |
} while (num > 0);
|
Begin a loop while the number to printed is greater than 0.
|
The loop should terminate when we run out of digits to process.
| 2 |
} while (num > 0);
|
Begin a loop while the number to printed is greater than 0.
|
We could check whether the are more digits left by checking whether the variable num, which gets updated in the body of the do loop, is greater than zero.
| 3 |
} while (num > 0);
|
Begin a loop while the number to printed is greater than 0.
|
If variable num is greater than zero, then it must have at least one digit, and in that case, the body of the do loop will be repeated again.
| 2 |
} while (num > 0);
|
Begin a loop while the number to printed is greater than 0.
|
The body of the while loop should repeat as long as there are more digits left that we have not processed yet.
| 2 |
System.out.println(num % 10);
|
Print the remainder when divided by 10.
|
Each printed digit is followed by the line separator (e.g. '\n') at the end.
| 1 |
System.out.println(num % 10);
|
Print the remainder when divided by 10.
|
We need to extract the last digit in the 1's position of the integer.
| 2 |
System.out.println(num % 10);
|
Print the remainder when divided by 10.
|
For example, if the integer is 1234, we want to extract the digit 4 that is in 1's position of the integer.
| 2 |
System.out.println(num % 10);
|
Print the remainder when divided by 10.
|
We do this by calculating the remainder of the division of the integer by 10.
| 3 |
System.out.println(num % 10);
|
Print the remainder when divided by 10.
|
Then, this statement prints the last digit of the integer to the standard output stream.
| 2 |
num = num / 10;
|
Divide the initial number by 10
|
Therefore, this division will remove the digit that we processed (lastDigit) and we can move on to the next digit.
| 2 |
num = num / 10;
|
Divide the initial number by 10
|
We truncate the extracted digit that we processed from the original integer by dividing the integer by 10.
| 3 |
num = num / 10;
|
Divide the initial number by 10
|
Note that this statement performs an integer division because both operand of the / operator are integer.
| 2 |
do {
|
Initiate the while loop.
|
We need to process the digits of the integer from right to left and print them.
| 1 |
do {
|
Initiate the while loop.
|
Therefore, we need to use a loop structure.
| 2 |
do {
|
Initiate the while loop.
|
In this program, we do this by using a do loop.
| 2 |
do {
|
Initiate the while loop.
|
The do loop is more appropriate than a while loop because a positive integer always has at least one digit which results in the body of the loop performing at least once.
| 1 |
Scanner scan = new Scanner(System.in);
|
Initialize the variable in which the user input will be scanned and stored.
|
To read the input values from the user, we need to define a Scanner object.
| 2 |
Scanner scan = new Scanner(System.in);
|
Initialize the variable in which the user input will be scanned and stored.
|
We need to read and process the values that the user enters.
| 1 |
System.out.println("Enter the phone age in years:");
|
Print the text asking the user to input the age of the phone in years.
|
We prompt the user to enter the phone age in years.
| 4 |
int phoneAge = scan.nextInt();
|
Scan the next token as an integer.
|
We read the phone age by calling the nextInt() method because this input is an integer.
| 2 |
int phoneAge = scan.nextInt();
|
Scan the next token as an integer.
|
We need to read the phone age that the user enters and store it in a variable.
| 2 |
System.out.println("Enter whether the phone is broken (true or false):");
|
Print the text asking the user to enter whether the phone is broken or not.
|
We prompt the user to enter whether the phone is broken.
| 4 |
boolean isBroken = scan.nextBoolean();
|
Scan the next token of the user input for a boolean value and store it.
|
We need to read whether the phone is broken and store it in a variable.
| 3 |
boolean isBroken = scan.nextBoolean();
|
Scan the next token of the user input for a boolean value and store it.
|
The variable isBroken is true when the phone is broken, and false otherwise.
| 1 |
boolean isBroken = scan.nextBoolean();
|
Scan the next token of the user input for a boolean value and store it.
|
We read whether the phone is broken by calling the nextBoolean() method because this input is a boolean.
| 3 |
int phoneAge = scan.nextInt();
|
Scan the next token as an integer and store it.
|
We read the phone age by calling the nextInt() method because this input is an integer.
| 3 |
int phoneAge = scan.nextInt();
|
Scan the next token as an integer and store it.
|
We need to read the phone age that the user enters and store it in a variable.
| 3 |
scan.close();
|
Close the scanner.
|
We close the scanner as we do not want to process any input from the user in the rest of the program.
| 3 |
boolean needPhone = isBroken || phoneAge >= 3;
|
Set boolean variable if the phone is broken or the phone age is greater than 3 years.
|
We use the || operator (called or) to combine the two conditions.
| 2 |
boolean needPhone = isBroken || phoneAge >= 3;
|
Set boolean variable if the phone is broken or the phone age is greater than 3 years.
|
The first condition is to test if the phone is broken and the second condition is to test if the phone age is at least 3 years old.
| 3 |
boolean needPhone = isBroken || phoneAge >= 3;
|
Set boolean variable if the phone is broken or the phone age is greater than 3 years.
|
We need two conditions to determine if it is the time for a new phone.
| 1 |
System.out.println(needPhone);
|
Print whether new phone needs to be bought.
|
This statement prints true/false depending on whether it is time to buy a new phone.
| 3 |
System.out.println(needPhone);
|
Print whether new phone needs to be bought.
|
The printed value is followed by an end-of-line character in the end.
| 1 |
String fullName = "John Smith"
|
Initialize/assign the name whose initials should be printed.
|
We define a string variable to hold the name.
| 3 |
String firstInitial = fullName.substring(0, 1);
|
Get the first letter of the first name (John).
|
We need to extract the first letter from the first name.
| 4 |
String firstInitial = fullName.substring(0, 1);
|
Get the first letter of the first name (John).
|
We do this by calling the substring(0,1) method.
| 1 |
String lastInitial = fullName.substring(5, 6);
|
Get the first letter of the Last name(Smith).
|
We need to extract the first letter from the last name.
| 4 |
String lastInitial = fullName.substring(5, 6);
|
Get the first letter of the Last name(Smith).
|
We do this by calling the substring(5,6) method.
| 1 |
String initials = firstInitial + lastInitial;
|
Combine the first letter of the first name and the first letter of the last name.
|
This statements concatenates the extracted initials and store the result in the string initials.
| 4 |
System.out.println(initials);
|
Print the initials.
|
This statement prints the initials to the default standard output stream.
| 4 |
System.out.println(initials);
|
Print the initials.
|
The printed value is followed by the end-of-line character at the end.
| 1 |
String firstInitial = fullName.substring(0, 1);
|
Get the first letter of the First name (John).
|
We need to extract the first letter from the first name.
| 4 |
String firstInitial = fullName.substring(0, 1);
|
Get the first letter of the First name (John).
|
We do this by calling the substring(0,1) method.
| 1 |
int[] values = {5, 8, 4, 78, 95, 12, 1, 0, 6, 35, 46};
|
Initialize the array containing the list of integers.
|
We define array values to hold the specified numbers.
| 3 |
int[] values = {5, 8, 4, 78, 95, 12, 1, 0, 6, 35, 46};
|
Initialize the array containing the list of integers.
|
We initialize the array by separating elements with a comma and enclosing the collection in braces { }.
| 2 |
int maxValue = values[0];
|
Assume the first value in the array to be the maximum value and assign it to the variable.
|
We need variable maxValue to store the maximum value of the array.
| 1 |
int maxValue = values[0];
|
Assume the first value in the array to be the maximum value and assign it to the variable.
|
We initialize this variable by the first value in the array because we initially assume that the first value is the maximum.
| 4 |
for (int i = 1; i < values.length; i++) {
|
Initiate a for loop that loops over the elements of the array.
|
We use a for loop to iterate over the remaining array indexes and search for the maximum value.
| 3 |
for (int i = 1; i < values.length; i++) {
|
Initiate a for loop that loops over the elements of the array.
|
We need the array indexes to start at 1 with every integer number up to but not including the array length.
| 2 |
int maxValue = values[0];
|
Assume the first element of the array to be the maximum value and assign it to the variable.
|
We need variable maxValue to store the maximum value of the array.
| 2 |
int maxValue = values[0];
|
Assume the first element of the array to be the maximum value and assign it to the variable.
|
We initialize this variable by the first value in the array because we initially assume that the first value is the maximum.
| 4 |
if (values[i] > maxValue) {
|
Check if the loop variable (element of the array) is greater than the previously assigned maximum value,
|
We need to compare the value at the index i of the array with the maximum value stored in variable maxValue.
| 3 |
if (values[i] > maxValue) {
|
Check if the loop variable (element of the array) is greater than the previously assigned maximum value,
|
If the value at that index is larger than the maximum value, then we need to set the maximum value to the value of the element at index i.
| 3 |
maxValue = values[i];
|
If so, assign the corresponding element to be the maximum value.
|
This statement sets the maximum value to value of the element at index i of the array.
| 2 |
System.out.println("Maximum value: " + maxValue);
|
Print the maximum value of the array once all the elements of the array are looped over.
|
This statement prints the maximum value of the array to the default standard output stream.
| 4 |
int maxValue = values[0];
|
Assume the first element of the array to be the maximum value and assign it to the variable 'maxValue'.
|
We need variable maxValue to store the maximum value of the array.
| 2 |
int maxValue = values[0];
|
Assume the first element of the array to be the maximum value and assign it to the variable 'maxValue'.
|
We initialize this variable by the first value in the array because we initially assume that the first value is the maximum.
| 4 |
if (values[i] > maxValue) {
|
Check if the loop variable (element of the array) is greater than the previously assigned maximum value.
|
We need to compare the value at the index i of the array with the maximum value stored in variable maxValue.
| 2 |
if (values[i] > maxValue) {
|
Check if the loop variable (element of the array) is greater than the previously assigned maximum value.
|
If the value at that index is larger than the maximum value, then we need to set the maximum value to the value of the element at index i.
| 3 |
maxValue = values[i];
|
If so, assign the corresponding element to be the maximum value.
|
This statement sets the maximum value to value of the element at index i of the array.
| 2 |
if (values[i] > maxValue) {
|
Check if the element of the array corresponding to the loop variable is greater than the previously assigned maximum value.
|
We need to compare the value at the index i of the array with the maximum value stored in variable maxValue.
| 2 |
if (values[i] > maxValue) {
|
Check if the element of the array corresponding to the loop variable is greater than the previously assigned maximum value.
|
If the value at that index is larger than the maximum value, then we need to set the maximum value to the value of the element at index i.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
Initiate a for loop over the set of even positive integers less than or equal to 10.
|
To do this, we need to use a loop structure.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
Initiate a for loop over the set of even positive integers less than or equal to 10.
|
We need to repeat the same process for each of the even positive integers that are less than or equal to 10.
| 3 |
for (int num = 2; num <= 10; num += 2) {
|
Initiate a for loop over the set of even positive integers less than or equal to 10.
|
To do this, we initialize variable num to 2, loop until reaching 10 (inclusive), and increment num by 2 after each iteration of the loop.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
Initiate a for loop over the set of even positive integers less than or equal to 10.
|
We use for loops instead of a while loop because we need to repeat the loop a certain number of times, and for loops are best-suited in cases like this when we know ahead of time the number of times that we need to repeat the loop.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
Initiate a for loop over the set of even positive integers less than or equal to 10.
|
Here, we want the for loop to start counting from 2 (2 is the first positive even number) with every even integer number up to (including) 10.
| 3 |
System.out.println(num + " squared = " + (num * num));
|
Print the the square of the number by multiplying the number with itself.
|
The multiplication may also be performed directly in the println statement.
| 3 |
System.out.println(num + " squared = " + (num * num));
|
Print the the square of the number by multiplying the number with itself.
|
Note that we do not necessarily have to store the squared number in a variable.
| 1 |
System.out.println(num + " squared = " + (num * num));
|
Print the the square of the number by multiplying the number with itself.
|
To square each number in the sequence, we multiply it by itself using the multiplication (*) operator.
| 3 |
System.out.println(num + " squared = " + (num * num));
|
Print the the square of the number by multiplying the number with itself.
|
In each iteration of the loop, this statement prints the square number to the default standard output stream.
| 2 |
Scanner scan = new Scanner(System.in);
|
initiate scanner class which is helpful in reading the input
|
To read the input values from the user, we need to define a Scanner object.
| 4 |
Scanner scan = new Scanner(System.in);
|
initiate scanner class which is helpful in reading the input
|
We need to read and process the values that the user enters.
| 2 |
System.out.println("Enter the phone age in years:");
|
print a prompt "Enter the phone age in years" into the console
|
We prompt the user to enter the phone age in years.
| 4 |
int phoneAge = scan.nextInt();
|
read the input from the console to variable phone age
|
We read the phone age by calling the nextInt() method because this input is an integer.
| 2 |
int phoneAge = scan.nextInt();
|
read the input from the console to variable phone age
|
We need to read the phone age that the user enters and store it in a variable.
| 2 |
System.out.println("Enter whether the phone is broken (true or false):");
|
show a prompt on console "Enter whether the phone is broken (true or false):"
|
We prompt the user to enter whether the phone is broken.
| 4 |
boolean isBroken = scan.nextBoolean();
|
read the input from the console onto variable isBroken
|
We need to read whether the phone is broken and store it in a variable.
| 2 |
boolean isBroken = scan.nextBoolean();
|
read the input from the console onto variable isBroken
|
The variable isBroken is true when the phone is broken, and false otherwise.
| 2 |
boolean isBroken = scan.nextBoolean();
|
read the input from the console onto variable isBroken
|
We read whether the phone is broken by calling the nextBoolean() method because this input is a boolean.
| 2 |
scan.close();
|
closing the scanner class to end the process of reading the input from console
|
We close the scanner as we do not want to process any input from the user in the rest of the program.
| 4 |
boolean needPhone = isBroken || phoneAge >= 3;
|
check weather the phone is broken or phone age is greater than or equals to 3 then set the variable needPhone to TRUE
|
We use the || operator (called or) to combine the two conditions.
| 2 |
boolean needPhone = isBroken || phoneAge >= 3;
|
check weather the phone is broken or phone age is greater than or equals to 3 then set the variable needPhone to TRUE
|
The first condition is to test if the phone is broken and the second condition is to test if the phone age is at least 3 years old.
| 3 |
boolean needPhone = isBroken || phoneAge >= 3;
|
check weather the phone is broken or phone age is greater than or equals to 3 then set the variable needPhone to TRUE
|
We need two conditions to determine if it is the time for a new phone.
| 3 |
System.out.println(needPhone);
|
print the value of variable needPhone
|
This statement prints true/false depending on whether it is time to buy a new phone.
| 2 |
System.out.println(needPhone);
|
print the value of variable needPhone
|
The printed value is followed by an end-of-line character in the end.
| 1 |
for (int num = 2; num <= 10; num += 2) {
|
loop until the num value less than or equals to 10; start the num value at 2 and increment by 2 in each iteration
|
To do this, we need to use a loop structure.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
loop until the num value less than or equals to 10; start the num value at 2 and increment by 2 in each iteration
|
We need to repeat the same process for each of the even positive integers that are less than or equal to 10.
| 3 |
for (int num = 2; num <= 10; num += 2) {
|
loop until the num value less than or equals to 10; start the num value at 2 and increment by 2 in each iteration
|
To do this, we initialize variable num to 2, loop until reaching 10 (inclusive), and increment num by 2 after each iteration of the loop.
| 4 |
for (int num = 2; num <= 10; num += 2) {
|
loop until the num value less than or equals to 10; start the num value at 2 and increment by 2 in each iteration
|
We use for loops instead of a while loop because we need to repeat the loop a certain number of times, and for loops are best-suited in cases like this when we know ahead of time the number of times that we need to repeat the loop.
| 2 |
for (int num = 2; num <= 10; num += 2) {
|
loop until the num value less than or equals to 10; start the num value at 2 and increment by 2 in each iteration
|
Here, we want the for loop to start counting from 2 (2 is the first positive even number) with every even integer number up to (including) 10.
| 3 |
System.out.println(num + " squared = " + (num * num));
|
print square value of the num in the each iteration in the console
|
The multiplication may also be performed directly in the println statement.
| 1 |
System.out.println(num + " squared = " + (num * num));
|
print square value of the num in the each iteration in the console
|
Note that we do not necessarily have to store the squared number in a variable.
| 1 |
System.out.println(num + " squared = " + (num * num));
|
print square value of the num in the each iteration in the console
|
To square each number in the sequence, we multiply it by itself using the multiplication (*) operator.
| 2 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.