7. Reverse Integer
Reverse an integer, handle integer overflow without using 64-bit data types
Math
9. Palindrome Number
Determine whether an integer is a palindrome
13. Roman to Integer
Given a roman number, convert it to an integer
268. Missing Number
No summary
43. Multiply Strings
We solved this problem by simulating vertical multiplication which factoring the multiplier into coefficient and exponent.
415. Add Strings
No summary
67. Add Binary
Given two binary strings, we calculate their sum.
202. Happy Number
We can use Floyd’s cycle detection algorithm to solve this problem.
Problems of Add Binary, Add Strings and Multiply Strings
A problem set of strings calculation problems.