leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE
commit 57c5f7030c9da7fa303bdbff777c2bc433641256
parent 3435beb8a91a4268a04a1a21b8df67cba35a3ff8
author Dimitrije Dobrota < mail@dimitrijedobrota.com >
date Thu, 13 Apr 2023 12:56:59 +0200

Daily Problem

Diffstat:
A Problems/0946.cpp | ++++++++++++++++++++++++++
M README.md | +

2 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/ Problems/0946.cpp b/ Problems/0946.cpp

@@ -0,0 +1,26 @@

class Solution {
public:
bool validateStackSequences(vector<int> &pushed, vector<int> &popped) {
int n = pushed.size(), m = popped.size();
int i = 0, j = 0;
stack<int> st;

while (i < n || j < m) {
if (st.empty()) {
if (i < n)
st.push(pushed[i++]);
else
return false;
} else {
if (st.top() == popped[j])
st.pop(), j++;
else if (i < n)
st.push(pushed[i++]);
else
return false;
}
}

return true;
}
};

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

@@ -362,6 +362,7 @@ for solving problems.

| 0938 | Easy | [Range Sum of BST](Problems/0938.cpp) |
| 0941 | Easy | [Valid Mountain Array](Problems/0941.cpp) |
| 0944 | Easy | [Delete Columns to Make Sorted](Problems/0944.cpp) |
| 0946 | Medium | [Validate Stack Sequences](Problems/0946.cpp) |
| 0947 | Medium | [Most Stones Removed with Same Row or Column](Problems/0947.cpp) |
| 0950 | Medium | [Reveal Cards In Increasing Order](Problems/0950.cpp) |
| 0953 | Easy | [Verifying an Alien Dictionary](Problems/0953.cpp) |