leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE |
commit6b97a182ad0c8a154b8d9635927778ce6cf328c7
parent534f9506f11b33e1aff4e245ecbe25a6dbe1588d
authorDimitrije Dobrota <mail@dimitrijedobrota.com>
dateSat, 11 Mar 2023 23:20:25 +0100

Random Problems

Diffstat:
AProblems/0069.cpp|++++++++++++++++
AProblems/0168.cpp|++++++++++++
AProblems/0171.cpp|+++++++++++
MREADME.md|+++

4 files changed, 42 insertions(+), 0 deletions(-)

diff --git a/Problems/0069.cpp b/Problems/0069.cpp

@@ -0,0 +1,16 @@

class Solution {
public:
int mySqrt(int x) {
int low = 1, high = x;
while (low <= high) {
int mid = low + (high - low) / 2;
if (mid == x / mid)
return mid;
else if (mid > x / mid)
high = mid - 1;
else
low = mid + 1;
}
return high;
}
};

diff --git a/Problems/0168.cpp b/Problems/0168.cpp

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

class Solution {
public:
string convertToTitle(int columnNumber) {
string res = "";
do {
columnNumber -= 1;
res += 'A' + columnNumber % 26;
} while ((columnNumber /= 26));
reverse(res.begin(), res.end());
return res;
}
};

diff --git a/Problems/0171.cpp b/Problems/0171.cpp

@@ -0,0 +1,11 @@

class Solution {
public:
int titleToNumber(string columnTitle) {
int res = 0;
for (char c : columnTitle) {
res *= 26;
res += c - 'A' + 1;
}
return res;
}
};

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

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

| 0064 | Medium | [Minimum Path Sum](Problems/0064.cpp) |
| 0066 | Easy | [Plus One](Problems/0066.cpp) |
| 0067 | Easy | [Add Binary](Problems/0067.cpp) |
| 0069 | Easy | [Sqrt(x)](Problems/0069.cpp) |
| 0070 | Easy | [Climbing Stairs](Problems/0070.cpp) |
| 0072 | Hard | [Edit Distance](Problems/0072.cpp) |
| 0074 | Medium | [Search a 2D Matrix](Problems/0074.cpp) |

@@ -144,7 +145,9 @@ for solving problems.

| 0162 | Medium | [Find Peak Element](Problems/0162.cpp) |
| 0164 | Hard | [Maximum Gap](Problems/0164.cpp) |
| 0167 | Medium | [Two Sum II - Input Array Is Sorted](Problems/0167.cpp) |
| 0168 | Easy | [Excel Sheet Column Title](Problems/0168.cpp) |
| 0169 | Easy | [Majority Element](Problems/0169.cpp) |
| 0171 | Easy | [Excel Sheet Column Number](Problems/0171.cpp) |
| 0173 | Medium | [Binary Search Tree Iterator](Problems/0173.cpp) |
| 0187 | Medium | [Repeated DNA Sequences](Problems/0187.cpp) |
| 0189 | Medium | [Rotate Array](Problems/0189.cpp) |