समस्या
Add up the prices in the cart. If the total is at least discount_threshold, take discount_percent percent off the whole total.
Implement cart_total(prices, discount_threshold, discount_percent).
Input
prices: The item prices. discount_threshold: The total that unlocks the discount. discount_percent: The discount in percent.
Output
Return the amount to pay.
सीमाएँ
0 ≤ length ≤ 1,000; 0 ≤ each price ≤ 100,000; 0 ≤ discount_percent ≤ 100
उदाहरण
इनपुट:
prices = [40, 35, 25]
discount_percent = 10
discount_threshold = 100
अपेक्षित आउटपुट:
expected = 90.0इनपुट:
std::vector<long long> prices = {40, 35, 25};
long long discount_percent = 10;
long long discount_threshold = 100;
अपेक्षित आउटपुट:
double expected = 90.0;इनपुट:
long[] prices = new long[] {40, 35, 25};
long discount_percent = 10;
long discount_threshold = 100;
अपेक्षित आउटपुट:
double expected = 90.0;व्याख्या
The total is 100, which reaches the threshold, so 10% off: 90.
इनपुट:
prices = [20, 30]
discount_percent = 10
discount_threshold = 100
अपेक्षित आउटपुट:
expected = 50.0इनपुट:
std::vector<long long> prices = {20, 30};
long long discount_percent = 10;
long long discount_threshold = 100;
अपेक्षित आउटपुट:
double expected = 50.0;इनपुट:
long[] prices = new long[] {20, 30};
long discount_percent = 10;
long discount_threshold = 100;
अपेक्षित आउटपुट:
double expected = 50.0;व्याख्या
The total 50 is below 100, so no discount: 50.
कैसे हल करें
पहले खुद कोशिश करें, फिर एक-एक करके संकेत खोलें।
संकेत 1
Discount से पहले cart total निकालो।
संकेत 2
Percentage reduction सिर्फ तभी लगाओ जब total threshold तक पहुँचे।
संकेत 3
ध्यान रहे discount पूरे order पर लगे, item by item नहीं।
अपेक्षित जटिलता
समय O(n), अतिरिक्त स्थान O(1)
संदर्भ
यह चुनौती CodeUtility के लिए अनुकूलित की गई है। ऊपर दिए गए स्टेटमेंट और सीमाओं का पालन करें।