We need to find the missing number which is not present in the array and that number lies between 0 to N. Here ...
ພວກເຮົາຕ້ອງຊອກຫາຕົວເລກທີ່ຂາດຫາຍໄປເຊິ່ງບໍ່ມີຢູ່ໃນແຖວແລະຕົວເລກນັ້ນຢູ່ລະຫວ່າງ 0 ເຖິງ N. ນີ້ ...