why while is faster than for

Question

https://code.sololearn.com/cGiH7V35t83s/?ref=app

Answer 1

Loops' performance is more likely to get affected by the complexity of the calculation inside its body, rather than the kind of loop.

Answer 2

A͢J if you test it in code editors, while is actually very faster

Answer 3

Maybe for while we used let to create a varible it saves varible to local memory and after while execution deletes varible. But for for loop it doesn’t deletes varible.

Answer 4

sami

Now Just change position of loops and see which is faster

//

console.time("while");
let i = 0;
while(i < 200000){
i++;
}
console.timeEnd("while");

//
console.time("for");
let j = 0;
for(j;j< 200000;j++){

}
console.timeEnd("for");

Answer 5

a quick google search also supports the idea of the for loop being faster.
But why the obsession with speed? Real world codes are not just simple loops and a lot of things will slow down your program. Readability and maintainability would rank higher up in my list.

Answer 6

In this 2nd for loop is faster while 1st one is slowest

//
console.time("for");
let j = 0;
for(;j< 200000;j++){

}
console.timeEnd("for");

//

console.time("while");
let i = 0;
while(i < 200000){
i++;
}
console.timeEnd("while");

console.time("for2");
let k = 0;
for(;k< 200000;k++){

}
console.timeEnd("for2")

Answer 7

because it has a low usage on processor unlike "for"

Answer 8

sami

Do the same thing there and see which is faster.

Answer 9

Maybe because "for" has three arguments messed up together while "while" has discreet 1 argument and i++ is specified separately.

Answer 10

after running the tests a few more times, the for loop seems faster on the average.

https://code.sololearn.com/c2lvxDgdOPAk/?ref=app

Answer 11

Hii

Answer 12

Apt update on termux