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A
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9

class Solution {
public boolean isTrionic(int[] nums) {
int n = nums.length;
if (n < 3) return false;

for (int p = 1; p < n - 2; p++) {
if (!isStrictlyIncreasing(nums, 0, p)) continue;
for (int q = p + 1; q < n - 1; q++) {
if (isStrictlyDecreasing(nums, p, q) && isStrictlyIncreasing(nums, q, n - 1)) {
return true;
}
}
}

return false;
}

private boolean isStrictlyIncreasing(int[] nums, int start, int end) {
for (int i = start; i < end; i++) {
if (nums[i] >= nums[i + 1]) return false;
}
return true;
}

private boolean isStrictlyDecreasing(int[] nums, int start, int end) {
for (int i = start; i < end; i++) {
if (nums[i] <= nums[i + 1]) return false;
}
return true;
}
}


A
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9

B
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9

class Solution {
public:
int maxBalancedShipments(vector<int>& weights) {
int n = weights.size();
if (n == 0) return 0;

int splits = 0;
int segmentMax = weights[0];

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

if (weights[i] < segmentMax) {
++splits;
segmentMax = (i + 1 < n) ? weights[i + 1] : 0;
++i;
} else {
segmentMax = max(segmentMax, weights[i]);
}
}

return splits;
}
};

B
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9

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