How to calculate XOR of array elements using JavaScript?

We will use a for loop to iterate over the array. We will initialize a variable called "result" with the value of the first element in the array. For each subsequent element in the array, We will use the XOR operator to update the "result" value of the element. this The process continues until all elements in the array have been processed, the result is The final XOR value of all elements in the array.

Let’s first understand what XOR is. We will also see how the XOR operation on arrays works.

Array XOR

• The XOR (exclusive OR) operation is a bitwise operation that compares two binary numbers and returns 1 if they are different and 0 if they are the same.

• The XOR operation on an array is a method of combining the values ​​of all elements in an array using the XOR operation.

• In an array A of size n, the XOR of all elements can be calculated using the following formula: A[0]A[1]A[2]…A[n-1]. p>

• Execute XOR on all elements of the array to get the number that appears only once in the array.

• An important application of the XOR operation on arrays is to find a single number that appears only once in an array and twice for all other elements.

method

This is a way to calculate the XOR of an array of elements using JavaScript -

function calculateXOR(arr) {
   let result = arr[0];
   for (let i = 1; i < arr.length; i++) {
      result = result ^ arr[i];
   }
   return result;
}

You can call this function by passing in an array of elements as a parameter, as shown below -

let arr = [1, 2, 3, 4, 5];
let xor = calculateXOR(arr);
console.log(xor);

This will output the XOR of all elements in the array.

Note - The XOR operation is a bitwise operation in JavaScript that compares each bit of the first operand with the corresponding operand in the second operand. If two bits are the same, the corresponding bit in the result is 0, otherwise it is 1.

Example

Here is an example of how to use JavaScript to calculate the XOR of all elements in an array -

function xorArray(arr) {
   let result = arr[0];
   for (let i = 1; i < arr.length; i++) {
      result = result ^ arr[i];
   }
   return result;
}
let testArray = [1, 2, 3, 4, 5];
console.log(xorArray(testArray)); 

illustrate

• The function xorArray(arr) accepts an array as a parameter.

• The variable result is initialized to the first element of the array.

• The for loop is used to iterate the array starting from the second element.

• On each iteration, the result variable is updated using the XOR (^) operator. The XOR operator compares each bit of the first operand to the corresponding bit of the second operand. If the bits are the same, the corresponding result bit is 0. If the bits are different, the corresponding result bit is 1.

• The final value of the result after the for loop is the XOR of all elements in the array.

• The function returns the final result.

• Defines a test array and calls the function using the test array as a parameter. The output of this function is logged to the console.

Output

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