leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE |
commitddeb5116a28a5787281927daa366ca2ef1f90cbf
parentaaf0d36bf2738d925161020a41bc304b2d0a4592
authorDimitrije Dobrota <mail@dimitrijedobrota.com>
dateTue, 21 Feb 2023 20:40:26 +0100

LeetCode 75 II: Day 18

Diffstat:
AProblems/0227.cpp|+++++++++++++++++++
AProblems/0735.cpp|++++++++++++
MREADME.md|++

3 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/Problems/0227.cpp b/Problems/0227.cpp

@@ -0,0 +1,19 @@

class Solution {
public:
int calculate(string s) {
stringstream ss("+" + s);
char op;
int n, last, ans = 0;
while (ss >> op >> n) {
if (op == '+' || op == '-') {
n = op == '+' ? n : -n;
ans += n;
} else {
n = op == '*' ? last * n : last / n;
ans = ans - last + n;
}
last = n;
}
return ans;
}
};

diff --git a/Problems/0735.cpp b/Problems/0735.cpp

@@ -0,0 +1,12 @@

class Solution {
public:
vector<int> asteroidCollision(vector<int>& asteroids) {
vector<int> st;
for (int aster : asteroids) {
while (!st.empty() && st.back() > 0 && st.back() < -aster) st.pop_back();
if (st.empty() || aster > 0 || st.back() < 0) st.push_back(aster);
else if (aster < 0 && st.back() == -aster) st.pop_back();
}
return st;
}
};

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

@@ -168,6 +168,7 @@ for solving problems.

| 0222 | Medium | [Count Complete Tree Nodes](Problems/0222.cpp) |
| 0223 | Medium | [Rectangle Area](Problems/0223.cpp) |
| 0226 | Easy | [Invert Binary Tree](Problems/0226.cpp) |
| 0227 | Medium | [Basic Calculator II](Problems/0227.cpp) |
| 0231 | Easy | [Power of Two](Problems/0231.cpp) |
| 0232 | Easy | [Implement Queue using Stacks](Problems/0232.cpp) |
| 0234 | Easy | [Palindrome Linked List](Problems/0234.cpp) |

@@ -287,6 +288,7 @@ for solving problems.

| 0714 | Medium | [Best Time to Buy and Sell Stock with Transaction Fee](Problems/0714.cpp) |
| 0724 | Easy | [Find Pivot Index](Problems/0724.cpp) |
| 0733 | Easy | [Flood Fill](Problems/0733.cpp) |
| 0735 | Medium | [Asteroid Collision](Problems/0735.cpp) |
| 0739 | Medium | [Daily Temperatures](Problems/0739.cpp) |
| 0740 | Medium | [Delete and Earn](Problems/0740.cpp) |
| 0743 | Medium | [Network Delay Time](Problems/0743.cpp) |