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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. // Function to check if str2 is a rotation of str1
  5. int isRotation(char *str1, char *str2) {
  6.     // Check if lengths are the same
  7.     if (strlen(str1) != strlen(str2)) {
  8.         return 0;  // NO
  9.     }
  10.  
  11.     // Create a new string by concatenating str2 with itself
  12.     char temp[2 * strlen(str2) + 1];
  13.     strcpy(temp, str2);
  14.     strcat(temp, str2);
  15.  
  16.     // Check if str1 is a substring of temp
  17.     if (strstr(temp, str1) != NULL) {
  18.         return 1;  // YES
  19.     }
  20.  
  21.     return 0;  // NO
  22. }
  23.  
  24. int main() {
  25.     int T;
  26.     scanf("%d", &T);  // Read the number of test cases
  27.  
  28.     // Process each test case
  29.     for (int t = 0; t < T; t++) {
  30.         char str1[101], str2[101];  // Maximum length of strings (based on constraints)
  31.         scanf("%s %s", str1, str2);
  32.  
  33.         // Check if str2 is a rotation of str1
  34.         if (isRotation(str1, str2)) {
  35.             printf("YES\n");
  36.         } else {
  37.             printf("NO\n");
  38.         }
  39.     }
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5288KB
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stdin
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2  // Test Cases
abacd  // testcase 1
acdab
coder  // testcase 2
cored
stdout
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NO
NO
https://ideone.com/kvhByc
language:
C (gcc 8.3)
created:
259 days ago
visibility:
public

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