\n
Problem: Achieving the Donation Goal for Helping the Less Fortunate<\/strong><\/p>\nGiven a donation goal, this problem determines whether several individuals can achieve this goal through their donations.<\/p>\n
Input:<\/p>\n
\ngoal<\/code>: The donation target amount (integer)<\/li>\ndonations<\/code>: The donation history of contributors (array of integers)<\/li>\n<\/ul>\nOutput:<\/p>\n
\n- Return
true<\/code> if the donation goal can be achieved, otherwise return false<\/code>.<\/li>\n<\/ul>\n<\/div>\nApproach to Solving the Problem<\/h2>\n
The core of this problem is to check whether we can reach the target amount with the given donations. We can solve the problem using the following steps:<\/p>\n
\n- Calculate the sum of the amounts donated by the contributors.<\/li>\n
- If the sum is greater than or equal to the target amount, we have achieved the goal, so return
true<\/code>.<\/li>\n- Otherwise, return
false<\/code>.<\/li>\n<\/ol>\nAlgorithm Implementation<\/h2>\n
Now, let’s implement the above approach in C# code.<\/p>\n
\n
using System;\n\nclass Program\n{\n static void Main(string[] args)\n {\n int goal = 100000; \/\/ Target amount\n int[] donations = { 25000, 30000, 50000, 35000 }; \/\/ Contributors' donation history\n\n bool result = CanAchieveGoal(goal, donations);\n Console.WriteLine(result ? \"We have achieved the goal!\" : \"We did not achieve the goal.\");\n }\n\n static bool CanAchieveGoal(int goal, int[] donations)\n {\n int total = 0;\n foreach (var donation in donations)\n {\n total += donation;\n }\n return total >= goal;\n }\n}\n<\/code><\/pre>\n<\/div>\nCode Analysis<\/h2>\n
The above code first defines the target amount and the contributors’ donation history. Then, it calculates the total amount of donations using the CanAchieveGoal<\/code> function, compares it with the target amount, and prints the final result. This code is straightforward and easy to understand.<\/p>\nPerformance Optimization<\/h2>\n
The current code has a time complexity of O(n) depending on the length of the donation history. There won’t be performance issues even if the number of contributors increases. However, if further optimization is needed, for example, a way to confirm early that we have reached the target amount, we can stop the loop when the total reaches the goal.<\/p>\n
\n
static bool CanAchieveGoal(int goal, int[] donations)\n{\n int total = 0;\n foreach (var donation in donations)\n {\n total += donation;\n if (total >= goal)\n {\n return true; \/\/ Confirm the goal has been achieved early\n }\n }\n return false;\n}\n<\/code><\/pre>\n<\/div>\nConclusion<\/h2>\n
In this article, we solved an algorithm problem to determine whether we can achieve a donation goal related to helping the less fortunate using C#. We explored various approaches, implementation code, and performance optimization. Such problems are often presented in actual coding tests, so sufficient practice is necessary.<\/p>\n
Finally, I hope that through this course, you learned valuable insights about donations and the basics of C# programming. I will return with more problems in the next session. Thank you!<\/p>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
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