[Solved] Having trouble converting Python code to Java [closed]

Question

It looks like you’re making good progress. One problem that jumps out is that you’re thinking of the second expression in a for loop as “stop when this is true.” So you’re thinking:

for (int i = -10; i == 10; i++) {

will keep looping until i == 10 is true. But in fact, it’s “keep looping while this is true.” So it will never loop, because i starts at -10 and then the condition i == 10 is checked, found to be false, and the loop never runs.

So we want to formulate that condition differently:

for (int i = -10; i < 10; i++) {
// ---------------^^^^^^

Now it runs while i < 10. When i is 10, it stops, because i < 10 is no longer true.

This is true of your other loops as well.

Accepted Answer

It looks like you’re making good progress. One problem that jumps out is that you’re thinking of the second expression in a for loop as “stop when this is true.” So you’re thinking:

for (int i = -10; i == 10; i++) {

will keep looping until i == 10 is true. But in fact, it’s “keep looping while this is true.” So it will never loop, because i starts at -10 and then the condition i == 10 is checked, found to be false, and the loop never runs.

So we want to formulate that condition differently:

for (int i = -10; i < 10; i++) {
// ---------------^^^^^^

Now it runs while i < 10. When i is 10, it stops, because i < 10 is no longer true.

This is true of your other loops as well.