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comp.js
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comp.js
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//PARAMETERS: If a or b are null return false.
//RESULT: write a function comp(a, b) (orcompSame(a, b))
// that checks whether the two arrays have the "same" elements,
// "same" means, here, that the elements in b are the elements
// in a squared, regardless of the order.
//EXAMPLES:
// Valid arrays
// a = [121, 144, 19, 161, 19, 144, 19, 11]
// b = [121, 14641, 20736, 361, 25921, 361, 20736, 361]
//PSEUDOCODE:
// check for arrays with null value, if so return false.
// sort the arrays.
// use the iterative map method to square each element in array1
// use the iteractive every() method to compare each value at each index are equal returns a boolean value.
function comp(array1, array2) {
if(array1 == null || array2 == null) return false;
array1.sort((a, b) => a - b); array2.sort((a, b) => a - b);
return array1.map(v => v * v).every((v, i) => v == array2[i]);
}
function comp(array1, array2) {
if (array1 === null || array2 === null) {
return false;
}
if (array1.length === 0 && array2.length === 0) {
return true;
}
var array1Squared = array1
.map(function (x) {
return x * x;
})
.sort(function (a, b) {
return a - b;
});
var array2Sorted = array2.sort(function (a, b) {
return a - b;
});
return JSON.stringify(array1Squared) === JSON.stringify(array2Sorted);
}
function comp(a, b) {
return !!a && !!b && a.map(x => x*x).sort().join() == b.sort().join();
}