Description

Given a rectangular matrix and an integer column, return an array containing the elements of the columnth column of the given matrix (the leftmost column is the 0th one).

Example

For

matrix = [[1, 1, 1, 2], [0, 5, 0, 4], [2, 1, 3, 6]]

and column = 2, the output should be extractMatrixColumn(matrix, column) = [1, 0, 3].

Input/Output

• [execution time limit] 4 seconds (js)

• [input] array.array.integer matrix

  2-dimensional array of integers representing a rectangular matrix.
  

  Guaranteed constraints:
  1 ≤ matrix.length ≤ 500,
  1 ≤ matrix[i].length ≤ 500,
  0 ≤ matrix[i][j] ≤ 105.

• [input] integer column

  An integer not greater than the number of matrix columns.

  Guaranteed constraints:
  0 ≤ column ≤ matrix[i].length - 1.

• [output] array.integer

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}