leetcode

5 Random Problems

6 files changed, 101 insertions(+), 0 deletions(-)

diff --git a/ Problems/1237.cpp b/ Problems/1237.cpp

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

class Solution {

public:

vector<vector<int>> findSolution(CustomFunction &customfunction, int z) const {

vector<vector<int>> res;

for (int x = 1, y = 1000; x <= 1000; ++x) {

while (y > 1 && customfunction.f(x, y) > z)

y--;

if (customfunction.f(x, y) == z) res.push_back({x, y});

}

return res;

}

};

diff --git a/ Problems/1357.cpp b/ Problems/1357.cpp

@@ -0,0 +1,25 @@

class Cashier {

uint16_t price[201];

uint16_t n, crnt = 0;

double discount;

public:

Cashier(int n, int discount, const vector<int> &products, const vector<int> &prices)

: n(n), discount((double)(100 - discount) / 100.0) {

for (int i = 0; i < products.size(); i++)

this->price[products[i]] = prices[i];

}

double getBill(const vector<int> &product, const vector<int> &amount) {

uint32_t total = 0;

for (uint8_t i = 0; i < product.size(); i++)

total += price[product[i]] * amount[i];

if (++crnt == n) {

crnt = 0;

return total * discount;

}

return total;

}

};

diff --git a/ Problems/1387.cpp b/ Problems/1387.cpp

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

class Solution {

static inline constexpr const array<int, 1001> dp = []() constexpr -> array<int, 1001> {

array<int, 1001> dp;

dp[0] = 0;

for (int i = 1; i <= 1000; i++) {

int res = 0, n = i;

while (n != 1) {

n = (n % 2) ? 3 * n + 1 : n / 2;

res++;

}

dp[i] = res;

}

return dp;

}();

public:

int getKth(int lo, int hi, int k) {

vector<int> vec(hi - lo + 1);

iota(begin(vec), end(vec), lo);

nth_element(begin(vec), begin(vec) + k - 1, end(vec),

[](const int a, const int b) { return dp[a] == dp[b] ? a < b : dp[a] < dp[b]; });

return vec[k - 1];

}

};

diff --git a/ Problems/1433.cpp b/ Problems/1433.cpp

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

class Solution {

public:

bool checkIfCanBreak(const string &s1, const string &s2) const {

int vec[27] = {0};

for (int i = 0; i < s1.size(); i++) {

vec[s1[i] & 0x1F]++;

vec[s2[i] & 0x1F]--;

}

bool b1 = false, b2 = false;

for (int i = 1, total = 0; i <= 26; i++) {

total += vec[i];

if (total > 0) b1 = true;

if (total < 0) b2 = true;

if (b1 && b2) return false;

}

return true;

}

};

diff --git a/ Problems/1963.cpp b/ Problems/1963.cpp

@@ -0,0 +1,13 @@

class Solution {

public:

int minSwaps(const string &s) {

int size = 0;

for (const char c : s) {

if (c == '[')

size++;

else if (size > 0)

size--;

}

return (size + 1) / 2;

}

};

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

@@ -485,6 +485,7 @@ for solving problems. | 1218 | Medium | [Longest Arithmetic Subsequence of Given Difference](Problems/1218.cpp) | | 1222 | Medium | [Queens That Can Attack the King](Problems/1222.cpp) | | 1232 | Easy | [Check If It Is a Straight Line](Problems/1232.cpp) |

| 1237 | Medium | [Find Positive Integer Solution for a Given Equation](Problems/1237.cpp) |

| 1249 | Medium | [Minimum Remove to Make Valid Parentheses](Problems/1249.cpp) | | 1254 | Medium | [Number of Closed Islands](Problems/1254.cpp) | | 1261 | Medium | [Find Elements in a Contaminated Binary Tree](Problems/1261.cpp) |

@@ -513,6 +514,7 @@ for solving problems. | 1346 | Easy | [Check if N and Its Double Exist](Problems/1346.cpp) | | 1347 | Medium | [Minimum Number of Steps to Make Two Strings Anagram](Problems/1347.cpp) | | 1351 | Easy | [Count Negative Numbers in a Sorted Matrix](Problems/1351.cpp) |

| 1357 | Medium | [Apply Discount Every n Orders](Problems/1357.cpp) |

| 1361 | Medium | [Validate Binary Tree Nodes](Problems/1361.cpp) | | 1367 | Medium | [Linked List in Binary Tree ](Problems/1367.cpp) | | 1372 | Medium | [Longest ZigZag Path in a Binary Tree](Problems/1372.cpp) |

@@ -521,6 +523,7 @@ for solving problems. | 1379 | Easy | [Find a Corresponding Node of a Binary Tree in a Clone of That Tree](Problems/1379.cpp) | | 1381 | Medium | [Design a Stack With Increment Operation](Problems/1381.cpp) | | 1382 | Medium | [Balance a Binary Search Tree](Problems/1382.cpp) |

| 1387 | Medium | [Sort Integers by The Power Value](Problems/1387.cpp) |

| 1396 | Medium | [Design Underground System](Problems/1396.cpp) | | 1402 | Hard | [Reducing Dishes](Problems/1402.cpp) | | 1406 | Hard | [Stone Game III](Problems/1406.cpp) |

@@ -530,6 +533,7 @@ for solving problems. | 1418 | Medium | [Display Table of Food Orders in a Restaurant](Problems/1418.cpp) | | 1425 | Hard | [Constrained Subsequence Sum](Problems/1425.cpp) | | 1431 | Easy | [Kids With the Greatest Number of Candies](Problems/1431.cpp) |

| 1433 | Medium | [Check If a String Can Break Another String](Problems/1433.cpp) |

| 1436 | Easy | [Destination City](Problems/1436.cpp) | | 1438 | Medium | [Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit](Problems/1438.cpp) | | 1441 | Medium | [Build an Array With Stack Operations](Problems/1441.cpp) |

@@ -613,6 +617,7 @@ for solving problems. | 1910 | Medium | [Remove All Occurrences of a Substring](Problems/1910.cpp) | | 1926 | Medium | [Nearest Exit from Entrance in Maze](Problems/1926.cpp) | | 1962 | Medium | [Remove Stones to Minimize the Total](Problems/1962.cpp) |

| 1963 | Medium | [Minimum Number of Swaps to Make the String Balanced](Problems/1963.cpp) |

| 1964 | Hard | [Find the Longest Valid Obstacle Course at Each Position](Problems/1964.cpp) | | 1970 | Hard | [Last Day Where You Can Still Cross](Problems/1970.cpp) | | 1971 | Easy | [Find if Path Exists in Graph](Problems/1971.cpp) |