add Easy_1_Two_Sum.js Easy_167_Two_Sum_II_Input_array_is_sorted

Author: zongyanqi

Easy_167_Two_Sum_II_Input_array_is_sorted.js

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+/**
+ * Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number.
+
+ The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2. Please note that your returned answers (both index1 and index2) are not zero-based.
+
+ You may assume that each input would have exactly one solution and you may not use the same element twice.
+
+ Input: numbers=[2, 7, 11, 15], target=9
+ Output: index1=1, index2=2
+
+
+ */
+
+/**
+ * @param {number[]} numbers
+ * @param {number} target
+ * @return {number[]}
+ */
+var twoSum = function (numbers, target) {
+
+    for (var i = 0; i < numbers.length - 1; i++) {
+        for (var j = i + 1; j < numbers.length; j++) {
+            if (numbers[i] + numbers[j] == target) return [i + 1, j + 1];
+        }
+    }
+};
+
+
+console.log(twoSum([2, 7, 11, 15], 9))

Easy_1_Two_Sum.js

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+/**
+ * Given an array of integers, return indices of the two numbers such that they add up to a specific target.
+
+ You may assume that each input would have exactly one solution, and you may not use the same element twice.
+
+ Example:
+ Given nums = [2, 7, 11, 15], target = 9,
+
+ Because nums[0] + nums[1] = 2 + 7 = 9,
+ return [0, 1].
+ */
+
+/**
+ * @param {number[]} numbers
+ * @param {number} target
+ * @return {number[]}
+ */
+var twoSum = function (numbers, target) {
+
+    for (var i = 0; i < numbers.length - 1; i++) {
+        for (var j = i + 1; j < numbers.length; j++) {
+            if (numbers[i] + numbers[j] == target) return [i, j];
+        }
+    }
+};