Question

Consider the mode method, which is intended to return the most frequently occurring value (mode) in its int[] parameter arr. For example, if the parameter of the mode method has the contents {6, 5, 1, 5, 2, 6, 5}, then the method is intended to return 5. /* Precondition: arr.length >= 1 / public static int mode(int[] arr) { int modeCount = 1; int mode = arr[0]; for (int j = 0; j < arr.length; j++) { int valCount = 0; for (int k = 0; k < arr.length; k++) { if ( / missing condition 1 / ) { valCount++; } } if ( / missing condition 2 / ) { modeCount = valCount; mode = arr[j]; } } return mode; } Which of the following can replace / missing condition 1 / and / missing condition 2 / so the code segment works as intended?

Answer 1

Hi! To make the code segment work as intended, you can replace the missing conditions with the following:

Missing condition 1:
```
if (arr[j] == arr[k]) {
```

Missing condition 2:
```
if (valCount > modeCount) {
```

Here's the corrected code:

```java
public static int mode(int[] arr) {
int modeCount = 1;
int mode = arr[0];
for (int j = 0; j < arr.length; j++) {
int valCount = 0;
for (int k = 0; k < arr.length; k++) {
if (arr[j] == arr[k]) {
valCount++;
}
}
if (valCount > modeCount) {
modeCount = valCount;
mode = arr[j];
}
}
return mode;
}
```

This code works by iterating through the elements in the input array and counting the occurrences of each element. If the current element has a higher occurrence count than the current mode, it updates the mode and modeCount accordingly. Finally, the mode is returned.

On embedded systems, the code segment in memory can typically be placed in read-only memory (ROM) without the need for loading because it is typically read-only and has a fixed size. Self-modifying code is permitted by the particular architecture if the code segment is not read-only.