Commit db1db7d

committed

2021年03月09日

1 parent d496b22 commit db1db7dCopy full SHA for db1db7d

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+20

-5

lines changed

+20

-5

lines changed

Lines changed: 8 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -4,10 +4,13 @@ def thousandSeparator(self, n):`
`4`	`4`	`:type n: int`
`5`	`5`	`:rtype: str`
`6`	`6`	`"""`
`7`		`- s = str(n)[::-1]`
`8`	`7`	`res = ""`
`9`		`- for i in range(len(s)):`
`10`		`- res += s[i]`
`11`		`- if i % 3 == 2 and i != len(s) - 1:`
	`8`	`+ cnt = 0`
	`9`	`+ for digit in str(n)[::-1]:`
	`10`	`+ res += digit`
	`11`	`+ cnt += 1`
	`12`	`+ if cnt == 3:`
	`13`	`+ cnt = 0`
`12`	`14`	`res += "."`
`13`		`- return res[::-1]`
	`15`	`+`
	`16`	`+ return res[::-1].strip(".")`

Lines changed: 12 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,12 @@`
	`1`	`+class Solution(object):`
	`2`	`+ def numSpecial(self, mat):`
	`3`	`+ """`
	`4`	`+ :type mat: List[List[int]]`
	`5`	`+ :rtype: int`
	`6`	`+ """`
	`7`	`+ # 找出所有满足条件的行和列`
	`8`	`+ possible_rows = [i for i, row in enumerate(mat) if sum(row) == 1]`
	`9`	`+ possible_cols = [i for i, col in enumerate(zip(*mat)) if sum(col) == 1]`
	`10`	`+`
	`11`	`+ # 在满足条件的行和列里统计值为1的点`
	`12`	`+ return sum([mat[i][j] for i in possible_rows for j in possible_cols])`

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