Coding interviews exercises and solutions

instructions.md

1. Create a function that divides an array of numbers into odd and even.

Input: [0, 1, 2, 3, 4, 5]

Output: { odd: [0, 2, 4], even: [1, 3, 5] }

2. Create a function that verifies how many times a number is repeated within an array.

Input: [0, 1, 1, 2, 3, 4, 5, 2, 3, 5, 7, 8, 6]

Output: Number X is repeated Y times

3. Create a function that displays the missing value of an array.

Input: [0, 1, 2, 3, 4, 5, 7]

Output: The number 6 is missing

solutions.md

1. Create a function that divides an array of numbers into odd and even.

function divide(array) {
  const oddNumbers = [];
  const evenNumbers = [];

  array.forEach(number => {
    if (number % 2 === 0) {
      oddNumbers.push(number);
    } else {
      evenNumbers.push(number);
    }
  });
  
  return {
    odd: oddNumbers,
    even: evenNumbers
  };
}

2. Create a function that verifies how many times a number is repeated within an array

function checkRepeated(number, array) {
  let ocurrences = 0;
  array.forEach(index => index === number && ocurrences++);
  
  return `Number ${number} is repeated ${ocurrences} times`;
}

3. Create a function that displays the missing value of an array.

function getMissingValue(array) {
  for (const [index, number] of array.entries()) {
		if (index !== number) {
			console.log(`The number ${index} is missing`);
      break;
    }
  }
}