Steps to comparing the elements in two arrays

Question

Steps to comparing the elements in two arrays

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I'm fairly new to coding and struggling a bit with this one.

Here's what my code currently looks like:

function solve(a, b) {
    var A = "";
    var B = "";

    for(var i=0; i<a.length; i++) {
        for(var j=0; j<b.length; j++) {
            if(a[i] > b[j]) {
                A = 1;
                B = "";
            }
            if(a[i] = b[j]) {
                A = "";
                B = "";
            }
            if(a[i] < b[j]) {
                A = "";
                B = 1;
            }
        }
    }
}

javascript arrays

Answer 1

Answer №1

If you're looking to increment array a and b by 1 whenever one exceeds the other at the same position, assuming both arrays have equal length:

function compareAndIncrement(a, b) {
    var A = 0;
    var B = 0;

        for(var i=0; i<a.length; i++) {
            if(a[i] > b[i]) {
                A++; //increment a by 1
            }
            else if(a[i] == b[i]) {
                //no action needed 
            }
            else if(a[i] < b[i]) {
                B++; //increment b by 1
            }
        }
        var updatedArray = [A, B];
        return updatedArray;
    }

The optimized version of this code would look like this:

function compareAndIncrement(a, b) {
    var A = 0;
    var B = 0;

    for(var i=0; i<a.length; i++) {
        if(a[i] > b[i]) {
            A++; //increment a by 1
        }
        else if(a[i] < b[i]) {
            B++; //increment b by 1
        }
    }
    var updatedArray = [A, B];
    return updatedArray;
}

This function assumes you intend to use the results elsewhere since "A" and "B" would otherwise not be accessible outside the function.

Answer 2

If you're looking to increment array a and b by 1 whenever one exceeds the other at the same position, assuming both arrays have equal length:

function compareAndIncrement(a, b) {
    var A = 0;
    var B = 0;

        for(var i=0; i<a.length; i++) {
            if(a[i] > b[i]) {
                A++; //increment a by 1
            }
            else if(a[i] == b[i]) {
                //no action needed 
            }
            else if(a[i] < b[i]) {
                B++; //increment b by 1
            }
        }
        var updatedArray = [A, B];
        return updatedArray;
    }

The optimized version of this code would look like this:

function compareAndIncrement(a, b) {
    var A = 0;
    var B = 0;

    for(var i=0; i<a.length; i++) {
        if(a[i] > b[i]) {
            A++; //increment a by 1
        }
        else if(a[i] < b[i]) {
            B++; //increment b by 1
        }
    }
    var updatedArray = [A, B];
    return updatedArray;
}

This function assumes you intend to use the results elsewhere since "A" and "B" would otherwise not be accessible outside the function.

Steps to comparing the elements in two arrays

Answer №1

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