init
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6
problems/p8/Cargo.toml
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6
problems/p8/Cargo.toml
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[package]
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name = "p8"
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version = "0.1.0"
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edition = "2024"
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[dependencies]
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33
problems/p8/src/main.rs
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33
problems/p8/src/main.rs
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fn find_max_product_optimized(number_str: &str, window_size: usize) -> u64 {
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let digits: Vec<u32> = number_str
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.chars()
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.map(|c| c.to_digit(10).unwrap())
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.collect();
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let mut max_product = 0u64;
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let mut i = 0;
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while i <= digits.len() - window_size {
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// 检查从当前位置开始的window_size个数字
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let window = &digits[i..i + window_size];
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// 如果包含0,跳到0之后继续
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if let Some(zero_pos) = window.iter().position(|&x| x == 0) {
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i += zero_pos + 1;
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continue;
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}
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let product: u64 = window.iter().map(|&x| x as u64).product();
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max_product = max_product.max(product);
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i += 1;
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}
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max_product
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}
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fn main() {
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let number_str = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
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let result = find_max_product_optimized(number_str, 13);
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println!("连续十三个数字的最大乘积是: {result}");
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}
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