leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE
commitfe5cef57411cfa6b4ca76ea452efde89b1e50dcc
parentc800b121c4af0d519385d2ed538e63787469448b
authorDimitrije Dobrota <mail@dimitrijedobrota.com>
dateSat, 4 Feb 2023 12:25:08 +0100

LeetCode 75 II: Day 1

Diffstat:
AProblems/0202.cpp|++++++++++++++
MREADME.md|+

2 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/Problems/0202.cpp b/Problems/0202.cpp

@@ -0,0 +1,14 @@

class Solution {
public:
bool isHappy(int n) {
unordered_set<int> seen;
int tmp;
while (n != 1 && !seen.count(n)) {
seen.insert(n);
tmp = n, n = 0;
do { n += (tmp % 10) * (tmp % 10); } while ((tmp /= 10) > 0);
}
return !seen.count(n);
}
};

diff --git a/README.md b/README.md

@@ -128,6 +128,7 @@ for solving problems.

| 0198 | Medium | [House Robber](Problems/0198.cpp) |
| 0199 | Medium | [Binary Tree Right Side View](Problems/0199.cpp) |
| 0200 | Medium | [Number of Islands](Problems/0200.cpp) |
| 0202 | Easy | [Happy Number](Problems/0202.cpp) |
| 0203 | Easy | [Remove Linked List Elements](Problems/0203.cpp) |
| 0205 | Easy | [Isomorphic Strings](Problems/0205.cpp) |
| 0206 | Easy | [Reverse Linked List](Problems/0206.cpp) |