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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 8: Dictionaries and Maps
  5. Discussions

Day 8: Dictionaries and Maps

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2694 Discussions

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  • hackerrank_cavi1
     + 0 comments

    I get a Runtime Error :( after all tests are passed. Anyone knows why does this happens?

  • solankirakesh895
     + 0 comments
    function processData(input) {

    const inputLines = input.split('\n');
    
  
    const entryCount = parseInt(inputLines[0]);
    
    
    const phoneBook = {};
    

    for (let i = 1; i <= entryCount; i++) {
        const [name, phoneNumber] = inputLines[i].split(' ');
        phoneBook[name] = phoneNumber;
    }
    
    
    for (let i = entryCount + 1; i < inputLines.length; i++) {
        const queryName = inputLines[i];
        if (queryName) { // Check if there is a query
            if (phoneBook[queryName]) {
                console.log(`${queryName}=${phoneBook[queryName]}`);
            } else {
                console.log('Not found');
            }
        }
    }
}

  • neilr
     + 0 comments

    I'm trying to solve this in Go and all of my attempts are timing out on test cases 1 - 3, despite working on the sample input 0. I think it's the loop reading/handling the query names, but I don't know why. Some examples:

    // Using a Scanner to handle queries
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
	name := scanner.Text()
	if phone, ok := addressBook[name]; !ok {
		fmt.Println("Not found")
	} else {
		fmt.Printf("%s=%s\n", name, phone)
	}
}
if err := scanner.Err(); err != nil {
	log.Fatal(err)
}

// Using fmt.Scan to handle queries
var query string
for {
	_, err := fmt.Scan(&query)
	if err != nil {
		if err == io.EOF {
			break
		}
		log.Fatal(err)
	}
	if phone, ok := addressBook[query]; !ok {
		fmt.Println("Not found")
	} else {
		fmt.Printf("%s=%s\n", query, phone)
	}
}

// Reading all of STDIN then iterating over it
stdin, err := io.ReadAll(os.Stdin)
if err != nil {
	log.Fatal(err)
}

queries := strings.Split(string(stdin), "\n")
for _, name := range queries {
	if phone, ok := addressBook[name]; !ok {
		fmt.Println("Not found")
	} else {
		fmt.Printf("%s=%s\n", name, phone)
	}
}

  • diegodeharolorca
     + 0 comments

    STATUS: RUNTIME ERROR. ALL TESTS PASSED.

    N = int(input()) dicc = {}

    for i in range(N): name, number = input().split() dicc[name] = number

    for i in range(N): name = input() if name in dicc: print(name+ "=" + dicc[name]) else: print("Not found")

  • pandeadhistanaya
     + 0 comments

    this is my solution, it works for sample test case 0, but why doesn't it works when i submit the solution, i'm using nodejs, anyone have any idea what did i do wrong?

    function processData(input) {
    //Enter your code here
    const entry = parseInt(input[0])
    const inputString = input.split('\n')
    let phoneBook = {}
    
    for (let i = 1; i <= entry; i++) {
      let items = inputString[i].split(' ');
      phoneBook[items[0]] = items[1]
    }
    
    for (let i = entry + 1; i < inputString.length; i++) {
      if (phoneBook[inputString[i]]) {
        console.log(`${inputString[i]}=${phoneBook[inputString[i]]}`)
      } else {
        console.log('Not found')
      }
    }
}