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| 17 | 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 | 2 702 |
| 18 | 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 | 4 316 |
| 19 | Trionic Array II
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9
class Solution {
public:
bool isTrionic(vector<int>& nums) { int n = nums.size();
bool p = true; bool q = true; if( n < 4) return false;
bool last = false;
if(nums[0] >= nums[1]) return false;
for(int i = 1; i < nums.size(); i++)
{ if(nums[i-1] == nums[i]) return false;
if(p){ if( nums[i-1] > nums[i]) { p = false; i--; } }
else{
if( nums[i-1] < nums[i]){ q = false; if( i < n-2) last = true;;}
}
if( last ) if( nums[i-1] > nums[i]) return false;
}
if( nums[n-2] < nums[n-1] && !p && !q) return true;
else return false;
}
};
Trionic Array II
Leetcode
C++
https://telegram.me/+Q_kf6B6EFexiNmU9 | 70 |
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