Please help me to understand this code.
function printEven(arr, pow) {
var res = 1;
for (var i = 0; i < pow; i++) {
res = res * arr;
}
return res;
}
console.log(printEven(4,3))
As far as I can see it is just a custom implementation of an exponential function.
It effectively calculates arr^pow, or in this case 4**3 or 4 * 4 * 4.
At i = 0, res gets multiplied with arr, 1 * 4 = 4.
At i = 2 it will have calculated 4 * 4 * 4, returning 64.
It seems to simply apply a power, so printEven(2,5) returns 2^5 or 32
it's effectly multipling the first input arr to 1 pow times (like 1*2*2*2*2*2)
so console.log(printEven(4,3)) is 64
function printEven(arr, pow) {
var res = 1;
for (var i = 0; i < pow; i++){
res = res * arr;
}
return res;
}
console.log(printEven(4,3))
console.log(printEven(5,2))This code is to find "number ^ times"
example 4 ^ 3 = 4 * 4 * 4 = 64