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// Example: Binary Search (1-based index)
FUNCTION binary_search(A, n, target)
    low <- 1
    high <- n
    WHILE low <= high DO
        mid <- floor((low + high) / 2)
        IF A[mid] == target THEN
            RETURN mid
        ELSE IF A[mid] < target THEN
            low <- mid + 1
        ELSE
            high <- mid - 1
        END IF
    END WHILE
    RETURN NOT_FOUND
END FUNCTION

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