ordering list of coordinates on row basis
2
I am trying to order a set of coordinates in a specific way
If I have a yet-to-be ordered set of coordinates that represent different cells in some grid,
(2, 2), (3, 1), (1, 2), (3, 2), (1, 3)
My goal is to order this from left to right starting from the bottom row.
schematic of coordinates
0 1 2 3 4
0 X X X X X
1 X X O O X
2 X X O X X
3 X O O X X
(3, 1), (3, 2), (2, 2), (1, 2), (1, 3) # desired output
I came up with the following code, but this would fail in the case where the row number is same but column number is different
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
data_1 = sorted(data, key=lambda x: x[0], reverse=True)
data_2 = sorted(data_1, key=lambda x: x[1])
>>> print(data_2)
[(2, 2), (1, 2), (0, 3), (1, 4), (0, 4)]
# desired output
[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
What improvement can I make?
python
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
add a comment |
2
I am trying to order a set of coordinates in a specific way
If I have a yet-to-be ordered set of coordinates that represent different cells in some grid,
(2, 2), (3, 1), (1, 2), (3, 2), (1, 3)
My goal is to order this from left to right starting from the bottom row.
schematic of coordinates
0 1 2 3 4
0 X X X X X
1 X X O O X
2 X X O X X
3 X O O X X
(3, 1), (3, 2), (2, 2), (1, 2), (1, 3) # desired output
I came up with the following code, but this would fail in the case where the row number is same but column number is different
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
data_1 = sorted(data, key=lambda x: x[0], reverse=True)
data_2 = sorted(data_1, key=lambda x: x[1])
>>> print(data_2)
[(2, 2), (1, 2), (0, 3), (1, 4), (0, 4)]
# desired output
[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
What improvement can I make?
python
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
add a comment |
2
2
2
I am trying to order a set of coordinates in a specific way
If I have a yet-to-be ordered set of coordinates that represent different cells in some grid,
(2, 2), (3, 1), (1, 2), (3, 2), (1, 3)
My goal is to order this from left to right starting from the bottom row.
schematic of coordinates
0 1 2 3 4
0 X X X X X
1 X X O O X
2 X X O X X
3 X O O X X
(3, 1), (3, 2), (2, 2), (1, 2), (1, 3) # desired output
I came up with the following code, but this would fail in the case where the row number is same but column number is different
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
data_1 = sorted(data, key=lambda x: x[0], reverse=True)
data_2 = sorted(data_1, key=lambda x: x[1])
>>> print(data_2)
[(2, 2), (1, 2), (0, 3), (1, 4), (0, 4)]
# desired output
[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
What improvement can I make?
python
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
I am trying to order a set of coordinates in a specific way
If I have a yet-to-be ordered set of coordinates that represent different cells in some grid,
(2, 2), (3, 1), (1, 2), (3, 2), (1, 3)
My goal is to order this from left to right starting from the bottom row.
schematic of coordinates
0 1 2 3 4
0 X X X X X
1 X X O O X
2 X X O X X
3 X O O X X
(3, 1), (3, 2), (2, 2), (1, 2), (1, 3) # desired output
I came up with the following code, but this would fail in the case where the row number is same but column number is different
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
data_1 = sorted(data, key=lambda x: x[0], reverse=True)
data_2 = sorted(data_1, key=lambda x: x[1])
>>> print(data_2)
[(2, 2), (1, 2), (0, 3), (1, 4), (0, 4)]
# desired output
[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
What improvement can I make?
python
python
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
edited Nov 16 '18 at 5:22
eyllanesc
84.4k103562
84.4k103562
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
asked Nov 16 '18 at 5:20
V AnonV Anon
2236
2236
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
1
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
sorted(data, key=lambda x:(-x[0],x[1]))
#[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
add a comment |
1
def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))answered Nov 16 '18 at 5:46
任智文任智文
111
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53331870%2fordering-list-of-coordinates-on-row-basis%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
sorted(data, key=lambda x:(-x[0],x[1]))
#[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
add a comment |
1
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
sorted(data, key=lambda x:(-x[0],x[1]))
#[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
add a comment |
1
1
1
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
sorted(data, key=lambda x:(-x[0],x[1]))
#[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
data = (1, 2), (1, 4), (2, 2), (0, 3), (0, 4)
sorted(data, key=lambda x:(-x[0],x[1]))
#[(2, 2), (1, 2), (1, 4), (0, 3), (0, 4)]
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
answered Nov 16 '18 at 5:38
TranshumanTranshuman
2,7861412
2,7861412
add a comment |
add a comment |
1
def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))answered Nov 16 '18 at 5:46
任智文任智文
111
add a comment |
1
def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))answered Nov 16 '18 at 5:46
任智文任智文
111
add a comment |
1
1
1
def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))answered Nov 16 '18 at 5:46
任智文任智文
111
def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))def sorted(items):
for i in range(len(items)-1, 0 , -1):
for j in range(i):
if items[j][0] < items[j+1][0]:
items[j], items[j+1] = items[j+1], items[j]
continue
if items[j][0] == items[j+1][0] and items[j][1] > items[j+1][1]:
items[j], items[j+1] = items[j+1], items[j]
return items
data = [(1, 2), (1, 4), (2, 2), (0, 3), (0, 4)]
print(sorted(data))answered Nov 16 '18 at 5:46
任智文任智文
111
answered Nov 16 '18 at 5:46
任智文任智文
111
answered Nov 16 '18 at 5:46
任智文任智文
111
answered Nov 16 '18 at 5:46
任智文任智文
111
111
add a comment |
add a comment |
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53331870%2fordering-list-of-coordinates-on-row-basis%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
