LeetCode Problem No.17 No.16 is here modalsoul.hatenablog.com 17. Letter Combinations of a Phone Number Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return th…

LeetCode Problem No.16 No.15 is here modalsoul.hatenablog.com 16. 3Sum Closest Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the three i…

LeetCode Problem No.15 No.14 is here modalsoul.hatenablog.com 15. 3Sum Given an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums[k] == 0. Notice that…

LeetCode Problem No.14. No.13 is here. modalsoul.hatenablog.com 14. Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. If there is no common prefix, return an empty string "". Examp…

LeetCode Problem No.13. No.12 is here. modalsoul.hatenablog.com 13. Roman to Integer Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Given a roman numeral, convert it to an integer. Example 1 Input: s = "…

AWS StepFunctionsで定義したStateMachineで、実行時に与えられる値をStateを横断して参照するようなケースを考える。 ex. 以下のようなステートマシンで、実行時にparamが与えられるとき、Step2でも同じくparamを参照したい flowchart TD Start(Start) -->|…