Binary Indexed Tree: Increase Value at Position

/**

• Increase the value at the given position in the tree array by the specified value.

• @param {number} position - The position in the tree array.

• @param {number} value - The value to be added.

• @throws {Error} - If the position is outside the allowed range.

• @returns {Object} - The updated tree array. */ increase(position, value) { if (position < 1 || position > this.arraySize) { throw new Error('Position is out of allowed range'); }

  for (let i = position; i <= this.arraySize; i += (i & -i)) { this.treeArray[i] += value; }

  return this; }