A good opportunity to implement a hashtable: lots of collisions without it.
A re-post of Solution 1137054, because that one doesn't appear in the list of solutions, for some reason (I'm not sure why).
Which values occur exactly three times?
Find state names that start with the letter N
Given a square and a circle, please decide whether the square covers more area.
Extra safe primes
Find Missing Number
Find the path through the cell
What is the scope of variables in Matlab ?
Sum of big primes without primes
I want to know everything!
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