1. Two SumEasy53.1K1.8KCompaniesGiven an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.You may assume that each input would have exactly one solution, and you may not use the same element twice.You can return the answer in any order. Example 1:Input: nums = [2,7,11,15], target = 9Output: [0,1]Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].Example 2:Input: nums = [3,2,4], target = 6Output: [1,2]Example 3:Input: nums = [3,3], target = 6Output: [0,1] Constraints:2 <= nums.length <= 104
Question
- Two SumEasy53.1K1.8KCompaniesGiven an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.You may assume that each input would have exactly one solution, and you may not use the same element twice.You can return the answer in any order. Example 1:Input: nums = [2,7,11,15], target = 9Output: [0,1]Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].Example 2:Input: nums = [3,2,4], target = 6Output: [1,2]Example 3:Input: nums = [3,3], target = 6Output: [0,1] Constraints:2 <= nums.length <= 104
Solution
Sure, here is a Python solution for the problem:
def twoSum(nums, target):
h = {}
for i, num in enumerate(nums):
n = target - num
if n not in h:
h[num] = i
else:
return [h[n], i]
This function works by iterating over the list of numbers. For each number, it calculates the difference between the target and the current number. If this difference is not in the dictionary h, it adds the current number and its index to h. If the difference is in h, it means we
Similar Questions
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.You may assume that each input would have exactly one solution, and you may not use the same element twice.You can return the answer in any order. Example 1:Input: nums = [2,7,11,15], target = 9Output: [0,1]Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].Example 2:Input: nums = [3,2,4], target = 6Output: [1,2]Example 3:Input: nums = [3,3], target = 6Output: [0,1] Constraints:2 <= nums.length <= 104-109 <= nums[i] <= 109-109 <= target <= 109Only one valid answer exists.
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
Write a Python class to find a pair of elements (indices of the two numbers) from a given array whose sum equals a specific target number.Note: There will be one solution for each input and do not use the same element twice.Sample Test CasesTest Case 1:Expected Output:Enter·comma-separated·numbers:·2,5,1,5,6,0Enter·target·value:·10index1=1,·index2=3Test Case 2:Expected Output:Enter·comma-separated·numbers:·3,4,5,6,2,9Enter·target·value:·9index1=0,·index2=3Test Case 3:Expected Output:Enter·comma-separated·numbers:·9,8,1,4,5Enter·target·value:·4No·valid·indices·found·for·the·target·value.
Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target.Return the sum of the three integers.You may assume that each input would have exactly one solution. Example 1:Input: nums = [-1,2,1,-4], target = 1Output: 2Explanation: The sum that is closest to the target is 2. (-1 + 2 + 1 = 2).Example 2:Input: nums = [0,0,0], target = 1Output: 0Explanation: The sum that is closest to the target is 0. (0 + 0 + 0 = 0). Constraints:3 <= nums.length <= 500-1000 <= nums[i] <= 1000-104 <= target <= 104
Given an array of elements. Find two elements in the array such that their sum is equal to the given element K.Input format :The first line of the input consists of the value of n.The second line of the input consists of the array of elements separated by space.The third line of the input consists of the sum.Output format :The output prints whether the array has a pair of elements with the given sum.Sample test cases :Input 1 :61 4 45 6 10 -816Output 1 :Array has two elements with given sum 16Input 2 :61 4 45 6 10 -860Output 2 :Array doesn't have two element
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