Daily Log

Explain Dynamic Programming and Other Techniques with Examples

jin

Jun 12, 20233y ago

In this article, we will dive into the world of dynamic programming, focusing on solving some programming challenges using also some other techniques. We will break down each problem, present different solutions in JavaScript, and provide a clear, concise explanation.

function longestIncreasingSubsequence(nums) {
  const n = nums.length;
  if (n === 0) return 0;
  
  // Initialize an array of length n, filled with 1s, as the minimum length of any LIS is 1
  const dp = Array(n).fill(1);
  
  // Iterate through the elements in the nums array
  for (let i = 1; i < n; i++) {
    for (let j = 0; j < i; j++) {
      // Check if the current element is greater than the previous one
      if (nums[i] > nums[j]) {
        // If it is, update the dp array with the maximum length found so far
        dp[i] = Math.max(dp[i], dp[j] + 1);
      }
    }
  }
  
  // Find the maximum length of the LIS by iterating through the dp array
  let maxLIS = dp[0];
  for (let i = 1; i < n; i++) {
    maxLIS = Math.max(maxLIS, dp[i]);
  }
  
  // Return the maximum length of the LIS
  return maxLIS;
}

Subscribe to 'd3v'

Subscribe to my site to be the first to receive notifications and emails about the latest updates, including new posts.
Join Slashpage and subscribe to 'd3v'!