❓ 𝗦𝘁𝗶𝗹𝗹 𝘀𝘁𝗿𝘂𝗴𝗴𝗹𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗝𝗮𝘃𝗮 𝗰𝗼𝗱𝗶𝗻𝗴 𝗿𝗼𝘂𝗻𝗱𝘀?
The issue isn’t your logic—it’s the lack of pattern recognition. As an SDET, knowing when to apply which pattern is the game-changer.
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👉 𝗦𝘁𝗮𝗿𝘁 𝘆𝗼𝘂𝗿 end to end 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗷𝗼𝘂𝗿𝗻𝗲𝘆 𝗻𝗼𝘄 with 1:1 guidance and help in coding interview preparation: https://lnkd.in/giCxnJJ7
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👉 𝗖𝗼𝗹𝗹𝗲𝗰𝘁𝗶𝗼𝗻𝘀 & 𝗠𝗮𝗽𝘀 – 𝗧𝗵𝗲 𝗖𝗼𝗿𝗲 𝗼𝗳 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗗𝗮𝘁𝗮 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴
When to use: Working with test data, mapping request/response pairs, or storing UI elements.
Example:
Map locators = new HashMap<>();
locators.put("loginBtn", "//button[text()='Login']");
Coding Problem Example:
Count frequency of characters or words → Use HashMap.
👉 𝗧𝘄𝗼 𝗣𝗼𝗶𝗻𝘁𝗲𝗿𝘀 – 𝗙𝗼𝗿 𝗦𝘁𝗿𝗶𝗻𝗴𝘀, 𝗔𝗿𝗿𝗮𝘆s
When to use: Useful in validations like palindromes, comparing logs, or merging sorted logs.
Example:
int i = 0, j = arr.length - 1;
while (i < j) {
if (arr[i] != arr[j]) return false;
i++; j--;
}
Coding Problem Example:
Is string a palindrome? Find pairs with given sum.
👉 𝗦𝗹𝗶𝗱𝗶𝗻𝗴 𝗪𝗶𝗻𝗱𝗼𝘄 – 𝗙𝗼𝗿 𝗦𝘂𝗯𝘀𝘁𝗿𝗶𝗻𝗴𝘀 𝗮𝗻𝗱 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗪𝗶𝗻𝗱𝗼𝘄𝘀
When to use: Identify performance drops, memory leaks, or longest continuous pass/fail patterns in logs.
Example:
Find the longest substring with no repeating characters.
👉 𝗦𝘁𝗿𝗶𝗻𝗴 𝗠𝗮𝗻𝗶𝗽𝘂𝗹𝗮𝘁𝗶𝗼𝗻 – 𝗙𝗼𝗿 𝗖𝗹𝗲𝗮𝗻𝘂𝗽𝘀, 𝗣𝗮𝗿𝘀𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗙𝗼𝗿𝗺𝗮𝘁𝘁𝗶𝗻𝗴
When to use:When cleaning API responses, generating dynamic test data, or parsing HTML/XML/text logs.
Example:
String response = "status=200&message=Success";
String[] parts = response.split("&");
for (String part : parts) {
String[] keyValue = part.split("=");
System.out.println(keyValue[0] + ": " + keyValue[1]);
}
Coding Problem Example:
Reverse a string, remove duplicates, extract digits from test input, etc.
👉 𝗧𝗿𝘆-𝗖𝗮𝘁𝗰𝗵 – 𝗙𝗼𝗿 𝗦𝗮𝗳𝗲 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗖𝗼𝗱𝗲
When to use:Handling exceptions during test execution, parsing, or when dealing with unstable inputs like API responses, browser states, or external systems.
Example:
Handle potential exceptions during array access or parsing
try {
int result = Integer.parseInt("123a"); // Will throw NumberFormatException
System.out.println("Parsed number: " + result);
} catch (NumberFormatException e) {
System.err.println("Invalid number format: " + e.getMessage());
}
👉 𝗥𝗲𝗴𝗲𝘅 & 𝗣𝗮𝘁𝘁𝗲𝗿𝗻 𝗠𝗮𝘁𝗰𝗵𝗶𝗻𝗴 – 𝗙𝗼𝗿 𝗟𝗼𝗴 𝗙𝗶𝗹𝗲 𝗩𝗮𝗹𝗶𝗱𝗮𝘁𝗶𝗼𝗻
Extract timestamps, validate test output format, match dynamic URLs.
Example:
Pattern p = Pattern.compile("Error: (\\d+)");
Matcher m = p.matcher(logLine);
if (m.find()) Sysout("Error Code: " + m.group(1));
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