Package g2001_2100.s2023_number_of_pairs_of_strings_with_concatenation_equal_to_target

Class Solution

java.lang.Object

g2001_2100.s2023_number_of_pairs_of_strings_with_concatenation_equal_to_target.Solution

public class Solution
extends Object

2023 - Number of Pairs of Strings With Concatenation Equal to Target\. Medium Given an array of **digit** strings `nums` and a **digit** string `target`, return _the number of pairs of indices_ `(i, j)` _(where_ `i != j`_) such that the **concatenation** of_ `nums[i] + nums[j]` _equals_ `target`. **Example 1:** **Input:** nums = ["777","7","77","77"], target = "7777" **Output:** 4 **Explanation:** Valid pairs are: - (0, 1): "777" + "7" - (1, 0): "7" + "777" - (2, 3): "77" + "77" - (3, 2): "77" + "77" **Example 2:** **Input:** nums = ["123","4","12","34"], target = "1234" **Output:** 2 **Explanation:** Valid pairs are: - (0, 1): "123" + "4" - (2, 3): "12" + "34" **Example 3:** **Input:** nums = ["1","1","1"], target = "11" **Output:** 6 **Explanation:** Valid pairs are: - (0, 1): "1" + "1" - (1, 0): "1" + "1" - (0, 2): "1" + "1" - (2, 0): "1" + "1" - (1, 2): "1" + "1" - (2, 1): "1" + "1" **Constraints:** * `2 <= nums.length <= 100` * `1 <= nums[i].length <= 100` * `2 <= target.length <= 100` * `nums[i]` and `target` consist of digits. * `nums[i]` and `target` do not have leading zeros.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	numOfPairs(String[] nums, String target)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

numOfPairs

public int numOfPairs(String[] nums,
 String target)