31 lines
644 B
Ruby
31 lines
644 B
Ruby
# @param {Integer[]} nums
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# @param {Integer} target
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# @return {Integer}
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def search(nums, target)
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left = 0
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right = nums.size
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while left < right do
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mid = (left + right).div(2)
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if nums[mid] == target then
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return mid
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elsif nums[mid] < target then
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left = mid + 1
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else
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right = mid
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end
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end
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return -1
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end
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RSpec.describe "search" do
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it "nums = [-1,0,3,5,9,12], target = 9" do
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expect(search([-1,0,3,5,9,12], 9)).to eq(4)
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end
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it "nums = [-1,0,3,5,9,12], target = 2" do
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expect(search([-1,0,3,5,9,12], 2)).to eq(-1)
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end
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end
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