JavaScript: Find the maximum difference between any two adjacent elements of a given array of integers

Last update on July 02 2025 12:55:15 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-92 with Solution

Find Max Difference Between Adjacent Elements

Write a JavaScript program to find the maximum difference between any two adjacent elements of a given array of integers.

Visual Presentation:

JavaScript: Find the maximum difference between any two adjacent elements of a given array of integers.

Sample Solution:

JavaScript Code:

// Function to find the maximum difference between adjacent elements in an array
function max_difference(arr) {
  var max = -1;     // Initialize a variable to store the maximum difference
  var temp;         // Temporary variable to calculate the difference

  // Iterate through the array to find the maximum difference
  for (var i = 0; i < arr.length - 1; i++) {
    temp = Math.abs(arr[i] - arr[i + 1]);  // Calculate the absolute difference
    max = Math.max(max, temp);             // Update the maximum difference
  }

  return max;   // Return the final maximum difference
}

// Example usage
console.log(max_difference([1, 2, 3, 8, 9]));   // 5
console.log(max_difference([1, 2, 3, 18, 9]));  // 15
console.log(max_difference([13, 2, 3, 8, 9]));  // 11

Output:

5
15
11

Live Demo:

Flowchart:

ES6 Version:

// Function to find the maximum difference between consecutive elements in an array
const max_difference = (arr) => {
  let max = -1;   // Initialize the maximum difference variable with -1
  let temp;       // Temporary variable to store the absolute difference

  // Iterate through the array to calculate the differences between consecutive elements
  for (let i = 0; i < arr.length - 1; i++) {
    temp = Math.abs(arr[i] - arr[i + 1]);   // Calculate the absolute difference
    max = Math.max(max, temp);              // Update the maximum difference
  }

  return max;   // Return the final maximum difference
};

// Example usage
console.log(max_difference([1, 2, 3, 8, 9]));   // 5
console.log(max_difference([1, 2, 3, 18, 9]));  // 15
console.log(max_difference([13, 2, 3, 8, 9]));  // 11

For more Practice: Solve these Related Problems:

Write a JavaScript program that computes the maximum absolute difference between any two consecutive elements in an array.
Write a JavaScript function that iterates through an array and returns the largest difference found between adjacent elements.
Write a JavaScript program that handles arrays with negative numbers and outputs the maximum difference between successive values.

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