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Find a string within a string without using a library method
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| # Find a string within a string and return the found index | |
| # Found index will be -1 if string not found | |
| def substring(strToSearch, strToFind): | |
| totalLength = len(strToSearch) | |
| findLength = len(strToFind) | |
| for idx in range(0, totalLength): | |
| if (strToSearch[idx:idx + findLength] == strToFind): | |
| return idx | |
| return -1 |
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