44 lines
894 B
Rust
44 lines
894 B
Rust
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// TODO: Given a static slice of integers, split the slice into two halves and
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// sum each half in a separate thread.
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// Do not allocate any additional memory!
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use std::thread;
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pub fn sum(slice: &'static [i32]) -> i32 {
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todo!()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn empty() {
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static ARRAY: [i32; 0] = [];
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assert_eq!(sum(&ARRAY), 0);
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}
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#[test]
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fn one() {
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static ARRAY: [i32; 1] = [1];
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assert_eq!(sum(&ARRAY), 1);
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}
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#[test]
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fn five() {
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static ARRAY: [i32; 5] = [1, 2, 3, 4, 5];
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assert_eq!(sum(&ARRAY), 15);
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}
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#[test]
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fn nine() {
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static ARRAY: [i32; 9] = [1, 2, 3, 4, 5, 6, 7, 8, 9];
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assert_eq!(sum(&ARRAY), 45);
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}
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#[test]
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fn ten() {
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static ARRAY: [i32; 10] = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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assert_eq!(sum(&ARRAY), 55);
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}
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}
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