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Given an array, find all the repeated elements in C language.
- The solution is very simple.
- Traverse through the array and make the element in that index negative to mark it as unique.
- If a repeated element is encountered, check if it is negative and print it as a repeated element.
- Example: For input {1, 3, 2, 7, 5, 1, 3}, the output will be 1, 3.
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