#include <stdio.h>
int main() {
int testCases;
scanf("%d", &testCases);
while (testCases--) {
int n;
scanf("%d", &n);
int arr[n];
// Input array elements
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
// Bubble sort
for (int i = 0; i < n - 1; i++) {
int swapped = 0; // Flag to check if any swapping occurs
for (int j = 0; j < n - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
swapped = 1; // Mark swapped
}
}
if (!swapped) break; // Exit early if
int main() {
int testCases;
scanf(“%d”, &testCases);
while (testCases--) {
int n, k;
scanf("%d", &n);
int arr[n];
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
scanf("%d", &k);
int uncleJohnyLength = arr[k - 1];
for (int i = 0; i < n - 1; i++) {
int swapped = 0;
for (int j = 0; j < n - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
swapped = 1; // Mark swapped
}
}
if (!swapped) break;
}
int newPosition = 0;
for (int i = 0; i < n; i++) {
if (arr[i] == uncleJohnyLength) {
newPosition = i + 1;
break;
}
}
printf("%d\n", newPosition);
}
return 0;
}
The issue in your code lies in its incomplete handling of the logic after the sorting phase. While you have implemented a bubble sort with an optimization to break early if no swaps are made, you did not include the necessary steps to find “Uncle Johny’s” new position in the sorted array. Additionally, the output logic to display the result for each test case is missing. Without these critical parts, your code stops prematurely, failing to determine or print the required output. To fix this, after sorting the playlist, you need to locate the length of “Uncle Johny” in the sorted array, determine its new position (1-indexed), and print the result for each test case before moving to the next iteration.
Your code snippet seems incomplete, as it cuts off in the middle of a statement (if (!swapped) break;). However, I will address common issues and complete the missing part to provide a working example.
Completed Code:
c
Copy code
#include <stdio.h>
int main() {
int testCases;
scanf("%d", &testCases);
while (testCases--) {
int n;
scanf("%d", &n);
int arr[n];
// Input array elements
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
// Bubble sort
for (int i = 0; i < n - 1; i++) {
int swapped = 0; // Flag to check if any swapping occurs
for (int j = 0; j < n - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
swapped = 1; // Mark swapped
}
}
if (!swapped) break; // Exit early if no swaps
}
// Output sorted array
for (int i = 0; i < n; i++) {
printf("%d ", arr[i]);
}
printf("\n");
}
return 0;
}
Explanation of Code:
Bubble Sort Implementation:
It sorts the array in ascending order.
The swapped flag ensures the algorithm exits early if the array becomes sorted before completing all iterations.
Handling Multiple Test Cases:
The testCases variable ensures the code processes multiple inputs as separate test cases.
Efficient Early Exit:
If no elements are swapped in an iteration, the loop exits early, reducing unnecessary comparisons.
Example Input and Output:
Input:
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2
5
64 34 25 12 22
4
10 8 6 4
Output:
Copy code
12 22 25 34 64
4 6 8 10
Common Issues to Check:
Incomplete Logic:
Ensure all if, for, and while statements are properly closed with braces ({} and }).
Array Size:
If n is too large, ensure your environment supports the required stack size or use dynamic memory allocation (e.g., malloc in C).
Test Case Input:
Verify that input matches the expected format.
Edge Cases:
Empty array (n = 0).
Single element (n = 1).
Let me know if you’re facing a specific error or unexpected behavior!