I'm having trouble with Leetcode accepting my solution for the Rotate Array problem

Question

I'm having trouble with Leetcode accepting my solution for the Rotate Array problem

Regarding the question about Rotating Arrays on a platform like Leetcode (array-646), I have encountered an issue. When I provide the answer as [5,6,7,1,2,3,4] and check it by using console.log(ans) in my VSCode editor, it displays the correct output. However, when I submit this answer on Leetcode, it doesn't recognize it and keeps insisting that my answer should be [1,2,3,4,5,6,7]. How can I modify my solution so that Leetcode understands and accepts it?

const k = 3;
const nums = [1, 2, 3, 4, 5, 6, 7];

var rotate = function (nums, k) {
  var FN = [];
  var LN = [];
  for (i = 0; i < nums.length - k; i++) {
    FN.push(nums[i]);
  }
  console.log("FN:", FN);

  for (j = k; j > 0; j--) {
    LN.push(nums[nums.length - j]);
  }
  console.log("LN:", LN);

  const ans = [].concat(LN, FN);
  console.log(ans);
}

javascript

Answer 1

Answer №1

It seems like you are referring to this specific problem. The brief summary is as follows:

Take an array and rotate it to the right by k steps, where k is a non-negative integer.

Pay attention to the notes provided in the template they have given:

/**
 * @param {number[]} nums
 * @param {number} k
 * @return {void} Do not return anything, modify nums in-place instead.
 */
var rotate = function(nums, k) {
    
};

It appears that leetcode expects you to manipulate the contents of the given array directly. However, you seem to be creating a new array instead of modifying the original one. If you examine the array after calling your function, you will notice that it still shows [1, 2, 3, 4, 5, 6, 7], which matches leetcode's output.

const k = 3;
const nums = [1, 2, 3, 4, 5, 6, 7];

var rotate = function (nums, k) {
  var FN = [];
  var LN = [];
  for (i = 0; i < nums.length - k; i++) {
    FN.push(nums[i]);
  }
  console.log("FN:", FN);

  for (j = k; j > 0; j--) {
    LN.push(nums[nums.length - j]);
  }
  console.log("LN:", LN);

  const ans = [].concat(LN, FN);
  console.log(ans);
}

rotate(nums, k);
console.log(nums);

What adjustments can I make for my solution to be accepted?

Providing more specifics may impact the integrity of your unique solution. In general terms, you should modify your function so that it changes the original nums array that was passed to it, ensuring it mirrors the sequence of numbers you stored in your ans constant.

Answer 2

It seems like you are referring to this specific problem. The brief summary is as follows:

Take an array and rotate it to the right by k steps, where k is a non-negative integer.

Pay attention to the notes provided in the template they have given:

/**
 * @param {number[]} nums
 * @param {number} k
 * @return {void} Do not return anything, modify nums in-place instead.
 */
var rotate = function(nums, k) {
    
};

It appears that leetcode expects you to manipulate the contents of the given array directly. However, you seem to be creating a new array instead of modifying the original one. If you examine the array after calling your function, you will notice that it still shows [1, 2, 3, 4, 5, 6, 7], which matches leetcode's output.

const k = 3;
const nums = [1, 2, 3, 4, 5, 6, 7];

var rotate = function (nums, k) {
  var FN = [];
  var LN = [];
  for (i = 0; i < nums.length - k; i++) {
    FN.push(nums[i]);
  }
  console.log("FN:", FN);

  for (j = k; j > 0; j--) {
    LN.push(nums[nums.length - j]);
  }
  console.log("LN:", LN);

  const ans = [].concat(LN, FN);
  console.log(ans);
}

rotate(nums, k);
console.log(nums);

What adjustments can I make for my solution to be accepted?

Providing more specifics may impact the integrity of your unique solution. In general terms, you should modify your function so that it changes the original nums array that was passed to it, ensuring it mirrors the sequence of numbers you stored in your ans constant.

Answer 3

Answer №2

It seems like the best way to update the nums variable is by directly assigning it a new value, such as nums = rotate(nums, k);.

Answer 4

It seems like the best way to update the nums variable is by directly assigning it a new value, such as nums = rotate(nums, k);.

Answer 5

Answer №3

It appears there is a slight issue with the code provided. Instead of modifying the original array, a new array is being returned. I have made some adjustments to ensure that the code meets Leetcode's requirements. Feel free to reach out if you need any clarification.

const k = 3;
const nums = [1, 2, 3, 4, 5, 6, 7];

var rotateArray = function (nums, k) {
  var copyOfNums = nums.slice();
  nums.length = 0;
  var firstHalf = [];
  var lastHalf = [];
  
  for (i = 0; i < copyOfNums.length - k; i++) {
    firstHalf.push(copyOfNums[i]);
  }

  for (j = k; j > 0; j--) {
    lastHalf.push(copyOfNums[copyOfNums.length - j]);
  }
  
  nums.push.apply(nums, lastHalf);
  nums.push.apply(nums, firstHalf);
  
  return nums;
}

console.log(rotateArray(nums, k)) // Output: [ 5, 6, 7, 1, 2, 3, 4 ]

Answer 6

It appears there is a slight issue with the code provided. Instead of modifying the original array, a new array is being returned. I have made some adjustments to ensure that the code meets Leetcode's requirements. Feel free to reach out if you need any clarification.

const k = 3;
const nums = [1, 2, 3, 4, 5, 6, 7];

var rotateArray = function (nums, k) {
  var copyOfNums = nums.slice();
  nums.length = 0;
  var firstHalf = [];
  var lastHalf = [];
  
  for (i = 0; i < copyOfNums.length - k; i++) {
    firstHalf.push(copyOfNums[i]);
  }

  for (j = k; j > 0; j--) {
    lastHalf.push(copyOfNums[copyOfNums.length - j]);
  }
  
  nums.push.apply(nums, lastHalf);
  nums.push.apply(nums, firstHalf);
  
  return nums;
}

console.log(rotateArray(nums, k)) // Output: [ 5, 6, 7, 1, 2, 3, 4 ]

Answer 7

Answer №4

/**
 * @param {number[]} nums
 * @param {number} k
 * @return {void} Do not return anything, modify nums in-place instead.
 */

Make sure to follow the third instruction which requires you to modify the array called nums directly. Avoid creating a new array like ans and storing your answer there because it will lead to rejection by the system.

  const ans = [].concat(LN, FN);
  console.log(ans);

It's important to adhere to these key points:

Carefully read and understand the instructions given.
Do not alter the name of the provided function as this may cause issues even if your code runs correctly locally.

Answer 8

/**
 * @param {number[]} nums
 * @param {number} k
 * @return {void} Do not return anything, modify nums in-place instead.
 */

Make sure to follow the third instruction which requires you to modify the array called nums directly. Avoid creating a new array like ans and storing your answer there because it will lead to rejection by the system.

  const ans = [].concat(LN, FN);
  console.log(ans);

It's important to adhere to these key points:

Carefully read and understand the instructions given.
Do not alter the name of the provided function as this may cause issues even if your code runs correctly locally.

I'm having trouble with Leetcode accepting my solution for the Rotate Array problem

Answer №1

Answer №2

Answer №3

Answer №4

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