leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE
commit71190176774e5c600d9869afc2c7ef13099946c5
parenteca5bf6fddad624cc8909c8ff9b0cfae8910f046
authorDimitrije Dobrota <mail@dimitrijedobrota.com>
dateFri, 17 Feb 2023 14:42:43 +0100

LeetCode 75 II: Day 14

Diffstat:
AProblems/0016.cpp|++++++++++++++++++++
AProblems/0076.cpp|+++++++++++++++++++++++
MREADME.md|++

3 files changed, 45 insertions(+), 0 deletions(-)

diff --git a/Problems/0016.cpp b/Problems/0016.cpp

@@ -0,0 +1,20 @@

class Solution {
public:
int threeSumClosest(vector<int> &nums, int target) {
int n = nums.size(), delta = INT_MAX / 2, res = 0;
sort(nums.begin(), nums.end());
for (int i = 0; i < n; i++) {
int j = i + 1;
int k = n - 1;
while (j < k) {
int sum = nums[i] + nums[j] + nums[k];
if (abs(target - sum) < delta) {
delta = abs(target - sum);
res = sum;
}
(sum > target) ? k-- : j++;
}
}
return res;
}
};

diff --git a/Problems/0076.cpp b/Problems/0076.cpp

@@ -0,0 +1,23 @@

class Solution {
public:
string minWindow(string s, string t) {
vector<int> remaining(128, 0);
for (char c : t) remaining[c]++;
int required = t.size();
int min = INT_MAX, start = 0, left = 0, i = 0;
while (i <= s.size() && start < s.size()) {
if (required) {
if (i == s.size()) break;
if (--remaining[s[i++]] >= 0) required--;
} else {
if (i - start < min) {
min = i - start;
left = start;
}
if (++remaining[s[start++]] > 0) required++;
}
}
return min == INT_MAX ? "" : s.substr(left, min);
}
};

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

@@ -36,6 +36,7 @@ for solving problems.

| 0013 | Easy | [Roman to Integer](Problems/0013.cpp) |
| 0014 | Easy | [Longest Common Prefix](Problems/0014.cpp) |
| 0015 | Medium | [3Sum](Problems/0015.cpp) |
| 0016 | Medium | [3Sum Closest](Problems/0016.cpp) |
| 0017 | Medium | [Letter Combinations of a Phone Number](Problems/0017.cpp) |
| 0019 | Medium | [Remove Nth Node From the End of List](Problems/0019.cpp) |
| 0020 | Easy | [Valid Parentheses](Problems/0020.cpp) |

@@ -76,6 +77,7 @@ for solving problems.

| 0072 | Hard | [Edit Distance](Problems/0072.cpp) |
| 0074 | Medium | [Search a 2D Matrix](Problems/0074.cpp) |
| 0075 | Medium | [Sort Colors](Problems/0075.cpp) |
| 0076 | Hard | [Minimum Window Substring](Problems/0076.cpp) |
| 0077 | Medium | [Combinations](Problems/0077.cpp) |
| 0078 | Medium | [Subsets](Problems/0078.cpp) |
| 0079 | Medium | [Word Search](Problems/0079.cpp) |