Sure, here are the Java code fragments for each of the tasks: 1. The sum of all even numbers between 2 and 100 (inclusive). ```java int sum = 0; for (int i = 2; i

Question

Sure, here are the Java code fragments for each of the tasks:

1. The sum of all even numbers between 2 and 100 (inclusive).
```java
int sum = 0;
for (int i = 2; i <= 100; i += 2) {
    sum += i;
}
```

2. The sum of all squares between 1 and 100 (inclusive).
```java
int sum = 0;
for (int i = 1; i <= 100; i++) {
    sum += i * i;
}
```

3. All powers of 2 from 2^0 up to 2^20 (inclusive).
```java
for (int i = 0; i <= 20; i++) {
    int power = (int) Math.pow(2, i);
    System.out.println(power);
}
```

4. The sum of all odd numbers between a and b (inclusive), where a and b are integer variables with a ≤ b.
```java
int sum = 0;
for (int i = a; i <= b; i++) {
    if (i % 2 != 0) {
        sum += i;
    }
}
```

5. The sum of all digits at odd positions (right-to-left starting at 1 as the right-most digit) of a numeric input.
```java
int sum = 0;
String numStr = String.valueOf(input);
for (int i = numStr.length() - 1; i >= 0; i -= 2) {
    sum += Character.getNumericValue(numStr.charAt(i));
}
```

6. The sum of all digits at odd positions (left-to-right starting at 1 as the left-most digit) of a numeric input.
```java
int sum = 0;
String numStr = String.valueOf(input);
for (int i = 0; i < numStr.length(); i += 2) {
    sum += Character.getNumericValue(numStr.charAt(i));
}
```

Please replace `input` with the actual numeric input for the 5th and 6th tasks.

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