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This approach utilizes the two-pointer technique to efficiently solve the problem. By keeping track of two pointers and adjusting them based on certain conditions, we can achieve the desired solution in a more efficient manner.
Time Complexity: O(n)
Space Complexity: O(1)
1void solve(int arr[], int n) {
2 int left = 0, right = n - 1;
3 while (left < right) {
4 // Implement the solution using two-pointer here
5 left++;
6 right--;
7 }
8}In C, we manage two indices, left and right, starting from opposite ends of the array. We move the pointers towards each other based on the conditions.
This approach involves first sorting the input data, then iterating through it to construct the solution. The sorted nature of the data can simplify the logic needed for solving the problem.
Time Complexity: O(n log n) due to sorting
Space Complexity: O(1) if we disregard sorting space
1functionJavaScript offers sort with a custom comparator to handle sorting. Post-sorting iteration is then done with a for-of loop.