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|B UKG College Hire Assessment | c % hackerrank.com, i7cj4nc7/questions/bpllls7f1qs 20. Question 20 Astring composed of the letters a, b, c, and d. The string is said nced if both of the following conditions are satisfie public class Solution { public static yoid mater args) { Regex_Test tester Regex_Test(); tester.checker("_ se \ instead of using ¥ Constraints --- [PAGE/IMAGE BREAK] --- 19. Question 19 Select the expression that is not correct. Pick ONE option Foreign key referential actions (ON UPDATE, ON DELETE) are profib The CHECK constraint is used If the constraint expre declared type occurs ac None of the above, D Iype here tos --- [PAGE/IMAGE BREAK] --- 19. Question 19 Select the expression that is not correct. Pick ONE option Foreign key referential actions (ON UPDATE, ON DELETE) are profib The CHECK constraint is used If the constraint expre declared type occurs ac None of the above, D Iype here tos --- [PAGE/IMAGE BREAK] --- Answered: 0/ Pick ONE option write the cor The for loop to « p to ca y. Use Javas h statements. = = @ 3° Cloudy --- [PAGE/IMAGE BREAK] --- Answered: 0/ Pick ONE option write the cor The for loop to « p to ca y. Use Javas h statements. = = @ 3° Cloudy --- [PAGE/IMAGE BREAK] --- P type here to ‘Answered: 0/20 Pick ONE option Replace the if statements with switch statements to make the more concise and readable. Create a subclass fo r eplace the tional with polymorphic code Create separate type chec e readability. & satin --- [PAGE/IMAGE BREAK] --- P type here to ‘Answered: 0/20 Pick ONE option Replace the if statements with switch statements to make the more concise and readable. Create a subclass fo r eplace the tional with polymorphic code Create separate type chec e readability. & satin --- [PAGE/IMAGE BREAK] --- "et G PDE AN SEE SS ARNE ED ee ee CO ee ry ee ae nen Ce Ve es Matic! Answered;0/20 ©! e a oe) KG UKG College Hire Assessment e E COSEIO € truct the st isthe numbe re pais ol ofthe English 1 ¢ ~ 4characters Construct a string of length N using the first Kletters of an alphabet. The cost to construct the string ¢haracters match in position.and order. For example, to.construct a string from the first A =2iette jong, two of the many possible results are ‘abab' fora cost of 1 and abba’ fora cost of & Construct the strings for the following test cases to minimize cost. Select the list of answers that-matches the Test Case 1: N=9 K=4 Test Case 2; N=27 K=5 Test Case 3; N=33' K=4 Pick ONE option 216 --- [PAGE/IMAGE BREAK] --- "et G PDE AN SEE SS ARNE ED ee ee CO ee ry ee ae nen Ce Ve es Matic! Answered;0/20 ©! e a oe) KG UKG College Hire Assessment e E COSEIO € truct the st isthe numbe re pais ol ofthe English 1 ¢ ~ 4characters Construct a string of length N using the first Kletters of an alphabet. The cost to construct the string ¢haracters match in position.and order. For example, to.construct a string from the first A =2iette jong, two of the many possible results are ‘abab' fora cost of 1 and abba’ fora cost of & Construct the strings for the following test cases to minimize cost. Select the list of answers that-matches the Test Case 1: N=9 K=4 Test Case 2; N=27 K=5 Test Case 3; N=33' K=4 Pick ONE option 216 --- [PAGE/IMAGE BREAK] --- © 58 mins answered: 0 420 hasnstrine® pashsering® f | > Replace the reverse fo Joop with a normal for loop | O Add descriptive comments. a U Extract the algorithm for the hash calculation (the for --- [PAGE/IMAGE BREAK] --- © 58 mins answered: 0 420 hasnstrine® pashsering® f | > Replace the reverse fo Joop with a normal for loop | O Add descriptive comments. a U Extract the algorithm for the hash calculation (the for --- [PAGE/IMAGE BREAK] --- refactoring technique. function printOvertimeRate(hours, rate) { // Calculate total hours worked let sum = 0; F for(let 1 = 0; 7 < hours ott sum += hours[i] Analyze the following code snippet. Identify the problem and choose the best - A) PD Wpe here to search - B) PD Wpe here to search
Show answer & explanation
The provided code snippet shows a function calculating a sum within a loop. In software engineering, extracting a specific logic block (like a calculation loop) into its own method is a standard refactoring technique called 'Extract Method', which improves readability, testability, and reusability.
Step-by-step Derivation:
Step 1: Analyze the code snippet provided in the image. The code contains a function printOvertimeRate which iterates through an array hours to calculate a sum using a for-loop.
Step 2: Evaluate the refactoring options.
- 'Replace reverse for loop with normal for loop' is a stylistic change, not a structural improvement.
- 'Add descriptive comments' is documentation, not refactoring.
- 'Extract the algorithm for the hash calculation (the for loop) into a separate method' follows the 'Extract Method' design pattern. This separates the concern of calculating the total from the concern of printing/processing the rate.
Step 3: Identify the most professional software engineering practice among the choices. Extracting complex logic into a helper method is the most effective way to reduce cognitive load and improve the maintainability of the code.