add: 只出现一次的数字等

src/array/search-insert-position.js

@@ -0,0 +1,21 @@
+/**
+ * @param {number[]} nums
+ * @param {number} target
+ * @return {number}
+ */
+var searchInsert = function (nums, target) {
+  const res = nums.findIndex(item => item === target)
+  if (res !== -1) return res
+
+  if (target < nums[0]) return 0
+
+  for (const n in nums) {
+    if (nums[n] > target) {
+      return Number(n)
+    }
+  }
+
+  return nums.length
+}
+
+export default searchInsert