Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use is_connected method in lisa

Best Python code snippet using lisa_python

test_connectivity.py

Source:test_connectivity.py

...116    component1 = next(components)117    with pytest.raises(StopIteration):118        next(components)119    assert component1 == set([0, 1, 2, 3, 4, 5])120def test_is_connected():121    # directed122    g = create_graph(123        directed=True,124        allowing_self_loops=False,125        allowing_multiple_edges=False,126        weighted=True,127    )128    g.add_vertices_from([0, 1])129    g.add_edge(0, 1)130    is_connected, components = connectivity.is_connected(g)131    assert not is_connected132    g.add_edge(1, 0)133    is_connected, components = connectivity.is_connected(g)134    assert is_connected135    # undirected136    g = create_graph(137        directed=False,138        allowing_self_loops=False,139        allowing_multiple_edges=False,140        weighted=True,141    )142    g.add_vertices_from([0, 1])143    g.add_edge(0, 1)144    is_connected, components = connectivity.is_connected(g)145    assert is_connected146def test_anyhashableg_strongly_gabow():147    g = create_graph(148        directed=True,149        allowing_self_loops=False,150        allowing_multiple_edges=False,151        weighted=True,152        any_hashable=True,153    )154    g.add_vertices_from(["0", "1", "2", "3", "4", "5"])155    g.add_edge("0", "1")156    g.add_edge("1", "2")157    g.add_edge("2", "0")158    g.add_edge("2", "3")...

HitBricks.py

Source:HitBricks.py

1import collections2class Solution(object):3    def get_connected(self, grid, x, y, n, m, is_connected):4        stack, result = [(x,y)], []5        visited = set([(x, y)])6        7        while len(stack) > 0:8            u, v = stack.pop()9            result.append((u,v))10            11            if u == 0 or ((u,v) in is_connected and is_connected[(u,v)]):12                return True, result13            14            for i in [-1,1]:15                if 0 <= u+i < n and 0 <= v < m and grid[u+i][v] == 1 and (u+i, v) not in visited:16                    stack.append((u+i,v))17                    visited.add((u+i,v))18                    19                if 0 <= u < n and 0 <= v+i < m and grid[u][v+i] == 1 and (u, v+i) not in visited:20                    stack.append((u,v+i))21                    visited.add((u,v+i))22        23        return False, result24    25    26    def get_deleted_neighbors(self, grid, x, y, n, m, is_connected):27        stack, result = [(x,y)], []28        visited = set([(x, y)])29        30        while len(stack) > 0:31            u, v = stack.pop()32            result.append((u,v))33            34            for i in [-1,1]:35                if 0 <= u+i < n and 0 <= v < m and (grid[u+i][v] == 2 or (grid[u+i][v] == 1 and is_connected[(u+i,v)] is False)) and (u+i, v) not in visited:36                    stack.append((u+i,v))37                    visited.add((u+i,v))38                    39                if 0 <= u < n and 0 <= v+i < m and (grid[u][v+i] == 2 or (grid[u][v+i] == 1 and is_connected[(u,v+i)] is False)) and (u, v+i) not in visited:40                    stack.append((u,v+i))41                    visited.add((u,v+i))42        43        return result44    45    46    def drop_bricks(self, grid, x, y, n, m, is_connected):47        if 0 <= x < n and 0 <= y < m and grid[x][y] == 1:48            connected, result = self.get_connected(grid, x, y, n, m, is_connected)49            for x, y in result:50                if connected is False:51                    grid[x][y] = 252                is_connected[(x,y)] = connected53    54            55    def hitBricks(self, grid, hits):56        n, m = len(grid), len(grid[0])57        is_connected = dict()58        59        for x in range(len(grid)):60            for y in range(len(grid[0])):61                if grid[x][y] == 1:62                    is_connected[(x,y)] = False63                    64        for x, y in hits:65            if grid[x][y] == 1:66                grid[x][y] = -167        68        for x, y in hits:69            if grid[x][y] == -1:70                self.drop_bricks(grid, x+1, y, n, m, is_connected)71                self.drop_bricks(grid, x-1, y, n, m, is_connected)72                self.drop_bricks(grid, x, y+1, n, m, is_connected)73                self.drop_bricks(grid, x, y-1, n, m, is_connected)74                75        out, disconnected_hits = [0]*len(hits), []76        77        for i in reversed(range(len(hits))):78            x, y = hits[i]79            if grid[x][y] == -1:80                grid[x][y] = 181                82                connected, _ = self.get_connected(grid, x, y, n, m, is_connected)83                is_connected[(x,y)] = connected84                85                if connected:86                    deleted_neighbors = self.get_deleted_neighbors(grid, x, y, n, m, is_connected)87                    cnts = len(deleted_neighbors)-188                    for u, v in deleted_neighbors:89                        grid[u][v] = 190                        is_connected[(u,v)] = connected91                    out[i] = cnts92                else:93                    disconnected_hits.append(i)94                    95        for i in disconnected_hits:96            x, y = hits[i]97            if is_connected[(x,y)] is False:98                grid[x][y] = 199                100                deleted_neighbors = self.get_deleted_neighbors(grid, x, y, n, m, is_connected)101                cnts = len(deleted_neighbors)-1102                out[i] = cnts103                    ...

1202. Smallest String With Swaps.py

Source:1202. Smallest String With Swaps.py

1import collections2#æè·¯ï¼ åä¸æ·±æçæåº3class Solution(object):4    def smallestStringWithSwaps(self, s, pairs):5        """6        :type s: str7        :type pairs: List[List[int]]8        :rtype: str9        """10        graph = collections.defaultdict(dict)11        for ele in pairs:12            graph[ele[0]][ele[1]] = True13            graph[ele[1]][ele[0]] = True14        self.graph = graph15        self.used = set()16        res = []17        s = [ele for ele in s]18        self.s = s19        for index,ele in enumerate(s):20            min_ele = self.dfs(index, set())21            s[index],s[min_ele] = s[min_ele], s[index]22            self.used.add(index)23            res.append(s[min_ele])24        return res25    def dfs(self, index, visited):26        for ele in self.graph[index]:27            if self.if_visited(ele) and ele not in visited:28                visited.add(ele)29                if ord(self.s[index]) < ord(self.s[ele]):30                    self.dfs(index, visited)31                else:32                    index = ele33                    self.dfs(ele, visited)34        return index35    def if_visited(self, ele):36        if ele in self.used:37            return False38        return True39import collections40class Solution:41    def dfs(self, i, is_connected):42        for neighbour in self.graph[i]:43            if neighbour not in self.visited:44                # is_connected.append(self.s[neighbour])45                is_connected.append(neighbour)46                self.visited.add(neighbour)47                self.dfs(neighbour, is_connected)48    def smallestStringWithSwaps(self, s, pairs):49        # å»ºå¾50        graph = collections.defaultdict(list)51        for ele in pairs:52            graph[ele[0]].append(ele[1])53            graph[ele[1]].append(ele[0])54        self.graph = graph55        self.visited = set()56        self.s = s57        # print(self.graph)58        res = list(s)59        for i in range(len(s)):60            if i not in self.visited:61                is_connected = []62                self.dfs(i, is_connected)63                neighbour = [s[i] for i in is_connected]64                neighbour.sort()65                is_connected.sort()66                for j,ele in zip(is_connected, neighbour):67                    res[j] = ele68        return "".join(res)69class Solution(object):70    def bfs(self, i, is_connected):71        if i not in self.visited:72            self.visited.add(i)73            is_connected.append(i)74            queue = collections.deque(self.graph[i])75            while queue:76                node = queue.popleft()77                if node not in self.visited:78                    self.visited.add(node)79                    is_connected.append(node)80                    queue.extend(self.graph[node])81    def smallestStringWithSwaps(self, s, pairs):82        """83        :type s: str84        :type pairs: List[List[int]]85        :rtype: str86        """87        graph = collections.defaultdict(list)88        for ele in pairs:89            graph[ele[0]].append(ele[1])90            graph[ele[1]].append(ele[0])91        self.graph = graph92        self.visited = set()93        self.s = s94        res = list(s)95        for i in range(len(s)):96            if i not in self.visited:97                is_connected = []98                self.bfs(i, is_connected)99                neighbour = [s[i] for i in is_connected]100                neighbour.sort()101                is_connected.sort()102                for j, ele in zip(is_connected, neighbour):103                    res[j] = ele104        return "".join(res)105if __name__ == '__main__':106    # s = "dcab"107    # pairs = [[0,3],[1,2]]108    s = "dcab"109    pairs = [[0, 3], [1, 2], [0, 2]]...

directed_graph_unweighted_test.py

Source:directed_graph_unweighted_test.py

...19        graph.connect("a", "c")20        graph.connect("b", "d")21        graph.connect("c", "d")22        graph.connect("d", "e")23        self.assertTrue(graph.is_connected("a", "b"))24        self.assertTrue(graph.is_connected("a", "c"))25        self.assertTrue(graph.is_connected("b", "d"))26        self.assertTrue(graph.is_connected("c", "d"))27        self.assertTrue(graph.is_connected("d", "e"))28        self.assertFalse(graph.is_connected("a", "e"))29        self.assertFalse(graph.is_connected("a", "d"))30        self.assertFalse(graph.is_connected("b", "c"))31        self.assertFalse(graph.is_connected("b", "e"))32        self.assertFalse(graph.is_connected("c", "e"))33    def test_connect_throws_error_if_vertex_not_found(self):34        graph = DirectedGraphUnweighted()35        with self.assertRaises(KeyError):36            graph.connect("a", "b")37    def test_is_connected_throws_error_if_vertex_not_found(self):38        graph = DirectedGraphUnweighted()39        with self.assertRaises(KeyError):40            graph.is_connected("a", "b")41    def test_neighbours(self):42        """43         a---->b44        |     |45        v     v46        c---->d---->e47        """48        graph = DirectedGraphUnweighted()49        graph.add_vertex("a")50        graph.add_vertex("b")51        graph.add_vertex("c")52        graph.add_vertex("d")53        graph.add_vertex("e")54        graph.connect("a", "b")...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.