Binary search algorithm (kotlin)

A sorted array, binary search for the target element:

fun main(args: Array<String>) {
    print(search(arrayOf(1, 3, 5, 6, 12, 54), 7))
}

fun search(nums: Array<Int>, target: Int): Int {
    var left = 0
    var right = nums.size
    var mid = (left + right).shr(1)

    while (left <= right) {
        if (target <= nums[mid]) {
            right = mid - 1
        } else {
            left = mid + 1
        }
        mid = (left + right).shr(1)
    }

    return left

}

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