-
Notifications
You must be signed in to change notification settings - Fork 46
165. Compare Version Numbers #50
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Merged
Merged
Changes from all commits
Commits
File filter
Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
56 changes: 56 additions & 0 deletions
src/0165_compare_version_numbers/compare_version_numbers.go
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| 165. Compare Version Numbers | ||
| https://leetcode.com/problems/compare-version-numbers/ | ||
|
|
||
| Compare two version numbers version1 and version2. | ||
| If version1 > version2 return 1; if version1 < version2 return -1;otherwise return 0. | ||
|
|
||
| You may assume that the version strings are non-empty and contain only digits and the . character. | ||
|
|
||
| The . character does not represent a decimal point and is used to separate number sequences. | ||
|
|
||
| For instance, 2.5 is not "two and a half" or "half way to version three", | ||
| it is the fifth second-level revision of the second first-level revision. | ||
|
|
||
| You may assume the default revision number for each level of a version number to be 0. | ||
| For example, version number 3.4 has a revision number of 3 and 4 for its first and second level revision number. | ||
| Its third and fourth level revision number are both 0. | ||
|
|
||
| Note: | ||
|
|
||
| Version strings are composed of numeric strings separated by dots . and this numeric strings may have leading zeroes. | ||
| Version strings do not start or end with dots, and they will not be two consecutive dots. | ||
| */ | ||
| // time: 2019年01月07日 | ||
|
|
||
| package compareversionnumbers | ||
|
|
||
| import ( | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
|
||
| // time complexity: O( max n, m ) | ||
| // space complexity: O(n+m) | ||
| func compareVersion(version1 string, version2 string) int { | ||
| var ( | ||
| v1 = strings.Split(version1, ".") | ||
| v2 = strings.Split(version2, ".") | ||
| ) | ||
| for i := 0; i < len(v1) || i < len(v2); i++ { | ||
| var v1N, v2N int | ||
| if i < len(v1) { | ||
| v1N, _ = strconv.Atoi(v1[i]) | ||
| } | ||
| if i < len(v2) { | ||
| v2N, _ = strconv.Atoi(v2[i]) | ||
| } | ||
|
|
||
| if v1N > v2N { | ||
| return 1 | ||
| } else if v1N < v2N { | ||
| return -1 | ||
| } | ||
| } | ||
| return 0 | ||
| } |
23 changes: 23 additions & 0 deletions
src/0165_compare_version_numbers/compare_version_numbers_test.go
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package compareversionnumbers | ||
|
|
||
| import "testing" | ||
|
|
||
| func TestCompareVersion(t *testing.T) { | ||
| type arg struct { | ||
| version1 string | ||
| version2 string | ||
| } | ||
|
|
||
| testCases := []arg{ | ||
| {version1: "0.1", version2: "1.1"}, | ||
| {version1: "1.0.1", version2: "1"}, | ||
| {version1: "1.01", version2: "1.001"}, | ||
| } | ||
| expected := []int{-1, 1, 0} | ||
|
|
||
| for index, data := range testCases { | ||
| if res := compareVersion(data.version1, data.version2); res != expected[index] { | ||
| t.Errorf("expected %d, got %d", expected[index], res) | ||
| } | ||
| } | ||
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.