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Improve linear search implementation with better documentation #3125

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Improve linear search implementation with better documentation #3125

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8 changes: 6 additions & 2 deletions search/linear_search.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,9 +16,13 @@
* \param [in] size length of array
* \param [in] key key value to search for
* \returns index where the key-value occurs in the array
* \returns -1 if key-value not found
* @returns index of the key if found, otherwise -1
*/
int LinearSearch(int *array, int size, int key) {
/**
* Time Complexity: O(n)
* Space Complexity: O(1)
*/
int linearSearch(int *array, int size, int key) {
for (int i = 0; i < size; ++i) {
if (array[i] == key) {
return i;
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