Iteration in Programming

What is the primary purpose of iteration in programming?

What will be the output of the following code snippet?

java
int i = 0;
while (i < 3) {
  System.out.print(i);
  i++;
}

What will be the value of x after the following code is executed?

java
int x = 0;
int i = 5;
while (i > 0) {
  x += i;
  i--;
}

Consider the following code:

java
int i = 0;
while (i < 5) {
  if (i % 2 == 0) {
    System.out.print(i + " ");
  }
}

What is the most significant problem with this loop?

How many times will the following for loop execute?

java
for (int i = 0; i < 10; i++) {
  System.out.println(i);
}

What will be the output of the following code snippet?

java
int sum = 0;
for (int i = 1; i <= 4; i++) {
  sum += i;
}
System.out.println(sum);

What is the final value of j after the following code executes?

java
int j = 0;
for (int i = 0; i < 5; i += 2) {
 j += i;
}

Given the string String str = "hello";, what is the value of str.length()?

What is the purpose of the following code snippet?

java
String str = "programming";
int count = 0;
for (int i = 0; i < str.length(); i++) {
  if (str.substring(i, i + 1).equals("m")) {
    count++;
  }
}

What code will reverse the string hello?