700640. Maximum Pairwise Computed Value

Easy

Maximum Pairwise Computed Value

Summary

Given a struct array where each element contains two integers, find the maximum pairwise computed value. The pairwise computed value is calculated by multiplying the first integer with the second integer.

The problem requires understanding of arrays and basic algorithmic concepts like loops and conditionals.

Detailed Explanation

We will use a simple approach to solve this problem. We iterate over the struct array, calculate the pairwise computed value for each pair, and keep track of the maximum value found so far.

Here's a step-by-step breakdown:

  1. Initialize a variable max_value to store the maximum pairwise computed value.
  2. Iterate over the struct array using a loop (e.g., for loop or while loop).
  3. For each element in the array, calculate the pairwise computed value by multiplying the first integer with the second integer.
  4. Compare the current pairwise computed value with max_value. If the current value is greater than max_value, update max_value.
  5. After iterating over all elements, max_value will hold the maximum pairwise computed value.

Time complexity: O(n), where n is the number of elements in the array. Space complexity: O(1), as we only use a constant amount of space to store max_value.

Optimized Solutions

Java

java
public int maxPairwiseComputedValue(int[][] arr) {
    int max = Integer.MIN_VALUE;
    for (int[] pair : arr) {
        int computedValue = pair[0] * pair[1];
        if (computedValue > max) {
            max = computedValue;
        }
    }
    return max;
}

Python

python
def max_pairwise_computed_value(arr):
    max_val = float('-inf')
    for pair in arr:
        computed_value = pair[0] * pair[1]
        if computed_value > max_val:
            max_val = computed_value
    return max_val

C++

cpp
int maxPairwiseComputedValue(int **arr, int n) {
    int max = INT_MIN;
    for (int i = 0; i < n; i++) {
        int computedValue = arr[i][0] * arr[i][1];
        if (computedValue > max) {
            max = computedValue;
        }
    }
    return max;
}

JavaScript

javascript
function maxPairwiseComputedValue(arr) {
    let max = -Infinity;
    for (let pair of arr) {
        let computedValue = pair[0] * pair[1];
        if (computedValue > max) {
            max = computedValue;
        }
    }
    return max;
}

Note that the optimized solutions are provided in the specified languages, and each solution uses a similar approach to find the maximum pairwise computed value.

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