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Java Program for Linear Search
• Last Updated : 04 Dec, 2018

Problem: Given an array arr[] of n elements, write a function to search a given element x in arr[].

## Java

 `// Java code for linearly search x in arr[]. If x``// is present then return its location, otherwise``// return -1``class` `LinearSearch {``    ``// This function returns index of element x in arr[]``    ``static` `int` `search(``int` `arr[], ``int` `n, ``int` `x)``    ``{``        ``for` `(``int` `i = ``0``; i < n; i++) {``            ``// Return the index of the element if the element``            ``// is found``            ``if` `(arr[i] == x)``                ``return` `i;``        ``}`` ` `        ``// return -1 if the element is not found``        ``return` `-``1``;``    ``}`` ` `    ``public` `static` `void` `main(String[] args)``    ``{``        ``int``[] arr = { ``3``, ``4``, ``1``, ``7``, ``5` `};``        ``int` `n = arr.length;``         ` `        ``int` `x = ``4``;`` ` `        ``int` `index = search(arr, n, x);``        ``if` `(index == -``1``)``            ``System.out.println(``"Element is not present in the array"``);``        ``else``            ``System.out.println(``"Element found at position "` `+ index);``    ``}``}`
Output:
```Element found at position 1
```

The time complexity of the above algorithm is O(n).

Please refer complete article on Linear Search for more details!

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