Why do i get timeout message

Question

function main() {
var depth = parseInt(readLine(), 10);
//your code goes here
var x=0
for(i=0;i<=depth;i=i++) {
x=x+7-2;
if (x==depth){
console.log(i)
}

}

}

Answer 1

i = i++
Is a statement with no effect

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Answer 2

The i=i++ statement performs post-increment and then it makes the assignment, so the assignment overwrites the incremented value with the old value. Here is how it works in pseudo-code:

tmp = i
i = i + 1
i = tmp

You can see the value in i ends the same as it started, so the loop never exits.