Commit 26e89ad

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guangsheng.li01

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Lines changed: 53 additions & 0 deletions

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	`1`	`+/*`
	`2`	`+ * [0118] pascals-triangle`
	`3`	`+ */`
	`4`	`+`
	`5`	`+pub struct Solution {}`
	`6`	`+`
	`7`	`+// solution impl starts here`
	`8`	`+`
	`9`	`+impl Solution {`
	`10`	`+ pub fn generate(num_rows: i32) -> Vec<Vec<i32>> {`
	`11`	`+ let mut t = Vec::with_capacity(num_rows as usize);`
	`12`	`+ for i in 0..num_rows as usize {`
	`13`	`+ let mut v: Vec<i32> = (0..i + 1).map(\|_\| 1).collect();`
	`14`	`+ if i > 0 {`
	`15`	`+ for j in 1..i {`
	`16`	`+ let last_row: &Vec<i32> = &t[i - 1];`
	`17`	`+ v[j] = last_row[j - 1] + last_row[j];`
	`18`	`+ }`
	`19`	`+ }`
	`20`	`+ t.push(v);`
	`21`	`+ }`
	`22`	`+ t`
	`23`	`+ }`
	`24`	`+}`
	`25`	`+`
	`26`	`+// solution impl ends here`
	`27`	`+`
	`28`	`+// solution tests starts here`
	`29`	`+`
	`30`	`+#[cfg(test)]`
	`31`	`+mod tests {`
	`32`	`+ use super::*;`
	`33`	`+`
	`34`	`+ #[test]`
	`35`	`+ fn test_case0() {`
	`36`	`+ assert_eq!(Solution::generate(1), vec![vec![1]]);`
	`37`	`+ }`
	`38`	`+`
	`39`	`+ #[test]`
	`40`	`+ fn test_case1() {`
	`41`	`+ assert_eq!(Solution::generate(2), vec![vec![1], vec![1, 1]]);`
	`42`	`+ }`
	`43`	`+`
	`44`	`+ #[test]`
	`45`	`+ fn test_case2() {`
	`46`	`+ assert_eq!(`
	`47`	`+ Solution::generate(3),`
	`48`	`+ vec![vec![1], vec![1, 1], vec![1, 2, 1]]`
	`49`	`+ );`
	`50`	`+ }`
	`51`	`+}`
	`52`	`+`
	`53`	`+// solution tests ends here`

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -13,6 +13,7 @@ mod a0035_search_insert_position;`
`13`	`13`	`mod a0053_maximum_subarray;`
`14`	`14`	`mod a0066_plus_one;`
`15`	`15`	`mod a0088_merge_sorted_array;`
	`16`	`+mod a0118_pascals_triangle;`
`16`	`17`	`mod a0145_binary_tree_postorder_traversal;`
`17`	`18`	`mod a0172_factorial_trailing_zeroes;`
`18`	`19`	`mod a0400_nth_digit;`

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