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Leetcode Problem 619. Biggest Single Number
619. Biggest Single Number
AI Mock Interview
Leetcode Solutions
Finding the Largest Single Number in a Table
Solution Idea
Query Steps
Code Implementation
Group the numbers in the
MyNumbers
table by the
num
column.
Count the occurrences of each number using the
COUNT()
function in SQL or
len()
in Pandas.
Filter out the numbers that appear more than once using the
HAVING
clause in SQL or the
filter
method in Pandas.
Select the maximum number from the filtered single-occurrence numbers using the
MAX()
function in SQL or the
max
method in Pandas.
Return the maximum number if it exists, otherwise return
null
.
erDiagram MyNumbers { int num }
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