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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)
1public void solve(int[] arr) {
2 int left = 0, right = arr.length - 1;
3 while (left < right) {
4 // Implement the solution using two-pointer here
5 left++;
6 right--;
7 }
8}In Java, we utilize array indexing with left and right pointers to efficiently scan and solve the problem.
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
1Python's in-built sort method is utilized. Post-sorting, we iterate using a simple loop.