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javadevjavadev
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Fixed sonar
1 parent 64cbc64 commit 4c5c18b

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2 files changed

+117
-73
lines changed

2 files changed

+117
-73
lines changed

‎src/main/java/g3401_3500/s3433_count_mentions_per_user/Solution.java

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -10,10 +10,10 @@ public int[] countMentions(int numberOfUsers, List<List<String>> events) {
1010
(a, b) -> {
1111
int time1 = Integer.parseInt(a.get(1));
1212
int time2 = Integer.parseInt(b.get(1));
13-
if (time1 == time2) {
14-
if (a.get(0).equals("OFFLINE") && b.get(0).equals("MESSAGE")) {
15-
return -1;
16-
}
13+
if (time1 == time2
14+
&& a.get(0).equals("OFFLINE")
15+
&& b.get(0).equals("MESSAGE")) {
16+
return -1;
1717
}
1818
return Integer.parseInt(a.get(1)) - Integer.parseInt(b.get(1));
1919
});

‎src/main/java/g3401_3500/s3435_frequencies_of_shortest_supersequences/Solution.java

Lines changed: 113 additions & 69 deletions
Original file line numberDiff line numberDiff line change
@@ -10,20 +10,24 @@
1010
import java.util.Map;
1111

1212
public class Solution {
13-
public List<List<Integer>> supersequences(String[] wordsArray) {
14-
List<String> words = new ArrayList<>(Arrays.asList(wordsArray));
15-
Collections.sort(words);
16-
int[] bg = new int[26];
17-
Arrays.fill(bg, -1);
18-
int[] ed = new int[26];
19-
Arrays.fill(ed, 0);
13+
private Map<String, Boolean> buildWordMap(List<String> words) {
2014
Map<String, Boolean> mp = new HashMap<>();
21-
Map<Character, Boolean> mp2 = new HashMap<>();
2215
for (String x : words) {
2316
mp.put(x, true);
17+
}
18+
return mp;
19+
}
20+
21+
private Map<Character, Boolean> buildCharMap(List<String> words) {
22+
Map<Character, Boolean> mp2 = new HashMap<>();
23+
for (String x : words) {
2424
mp2.put(x.charAt(0), true);
2525
mp2.put(x.charAt(1), true);
2626
}
27+
return mp2;
28+
}
29+
30+
private int[] initializeAnswerArray(Map<String, Boolean> mp, Map<Character, Boolean> mp2) {
2731
int[] tans = new int[26];
2832
Arrays.fill(tans, 0);
2933
for (char c = 'a'; c <= 'z'; c++) {
@@ -34,19 +38,102 @@ public List<List<Integer>> supersequences(String[] wordsArray) {
3438
tans[c - 'a'] = 1;
3539
}
3640
}
41+
return tans;
42+
}
43+
44+
private List<String> filterWords(List<String> words, int[] tans) {
3745
List<String> wtc = new ArrayList<>();
3846
for (String x : words) {
3947
if (tans[x.charAt(0) - 'a'] != 2 && tans[x.charAt(1) - 'a'] != 2) {
4048
wtc.add(x);
4149
}
4250
}
51+
return wtc;
52+
}
53+
54+
private void updateBoundaries(List<String> wtc, int[] bg, int[] ed) {
4355
for (int i = 0; i < wtc.size(); i++) {
4456
int l = wtc.get(i).charAt(0) - 'a';
4557
if (bg[l] == -1) {
4658
bg[l] = i;
4759
}
4860
ed[l] = i;
4961
}
62+
}
63+
64+
private List<Integer> findMinimalSolutions(List<String> wtc, int[] tans, int[] bg, int[] ed) {
65+
List<Integer> ns = new ArrayList<>();
66+
for (int i = 0; i < 26; i++) {
67+
if (tans[i] == 1) {
68+
ns.add(i);
69+
}
70+
}
71+
List<Integer> gm = new ArrayList<>();
72+
for (int i = 0; i < (1 << ns.size()); i++) {
73+
if (isValidSolution(i, ns, wtc, tans.clone(), bg, ed)) {
74+
gm.add(i);
75+
}
76+
}
77+
return gm;
78+
}
79+
80+
private boolean isValidSolution(
81+
int i, List<Integer> ns, List<String> wtc, int[] tans, int[] bg, int[] ed) {
82+
int[] indg = new int[26];
83+
Arrays.fill(indg, 0);
84+
for (int j = 0; j < ns.size(); j++) {
85+
if ((i & (1 << j)) != 0) {
86+
tans[ns.get(j)] = 2;
87+
} else {
88+
tans[ns.get(j)] = 1;
89+
}
90+
}
91+
for (String w : wtc) {
92+
if (tans[w.charAt(0) - 'a'] != 2 && tans[w.charAt(1) - 'a'] != 2) {
93+
indg[w.charAt(1) - 'a']++;
94+
}
95+
}
96+
return processIndegrees(indg, tans, wtc, bg, ed);
97+
}
98+
99+
private boolean processIndegrees(int[] indg, int[] tans, List<String> wtc, int[] bg, int[] ed) {
100+
List<Integer> chk = new ArrayList<>();
101+
for (int j = 0; j < 26; j++) {
102+
if (indg[j] == 0 && tans[j] == 1) {
103+
chk.add(j);
104+
}
105+
}
106+
while (!chk.isEmpty()) {
107+
int u = chk.remove(chk.size() - 1);
108+
if (bg[u] == -1) {
109+
continue;
110+
}
111+
for (int j = bg[u]; j <= ed[u]; j++) {
112+
int l = wtc.get(j).charAt(1) - 'a';
113+
if (tans[l] == 2) {
114+
continue;
115+
}
116+
indg[l]--;
117+
if (indg[l] == 0) {
118+
chk.add(l);
119+
}
120+
}
121+
}
122+
return Arrays.stream(indg).max().getAsInt() == 0;
123+
}
124+
125+
public List<List<Integer>> supersequences(String[] wordsArray) {
126+
List<String> words = new ArrayList<>(Arrays.asList(wordsArray));
127+
Collections.sort(words);
128+
int[] bg = new int[26];
129+
Arrays.fill(bg, -1);
130+
int[] ed = new int[26];
131+
Arrays.fill(ed, 0);
132+
Map<String, Boolean> mp = buildWordMap(words);
133+
Map<Character, Boolean> mp2 = buildCharMap(words);
134+
int[] tans = initializeAnswerArray(mp, mp2);
135+
List<String> wtc = filterWords(words, tans);
136+
updateBoundaries(wtc, bg, ed);
50137
List<List<Integer>> ans = new ArrayList<>();
51138
if (wtc.isEmpty()) {
52139
List<Integer> tansList = new ArrayList<>();
@@ -55,76 +142,33 @@ public List<List<Integer>> supersequences(String[] wordsArray) {
55142
}
56143
ans.add(tansList);
57144
return ans;
58-
} else {
59-
List<Integer> ns = new ArrayList<>();
60-
for (int i = 0; i < 26; i++) {
61-
if (tans[i] == 1) {
62-
ns.add(i);
63-
}
145+
}
146+
147+
List<Integer> gm = findMinimalSolutions(wtc, tans, bg, ed);
148+
int minb = gm.stream().mapToInt(Integer::bitCount).min().getAsInt();
149+
150+
List<Integer> ns = new ArrayList<>();
151+
for (int i = 0; i < 26; i++) {
152+
if (tans[i] == 1) {
153+
ns.add(i);
64154
}
65-
List<Integer> gm = new ArrayList<>();
66-
for (int i = 0; i < (1 << ns.size()); i++) {
67-
int[] indg = new int[26];
68-
Arrays.fill(indg, 0);
155+
}
156+
for (int x : gm) {
157+
if (Integer.bitCount(x) == minb) {
69158
for (int j = 0; j < ns.size(); j++) {
70-
if ((i & (1 << j)) != 0) {
159+
if ((x & (1 << j)) != 0) {
71160
tans[ns.get(j)] = 2;
72161
} else {
73162
tans[ns.get(j)] = 1;
74163
}
75164
}
76-
for (String w : wtc) {
77-
if (tans[w.charAt(0) - 'a'] != 2 && tans[w.charAt(1) - 'a'] != 2) {
78-
indg[w.charAt(1) - 'a']++;
79-
}
80-
}
81-
List<Integer> chk = new ArrayList<>();
82-
for (int j = 0; j < 26; j++) {
83-
if (indg[j] == 0 && tans[j] == 1) {
84-
chk.add(j);
85-
}
86-
}
87-
while (!chk.isEmpty()) {
88-
int u = chk.remove(chk.size() - 1);
89-
if (bg[u] == -1) {
90-
continue;
91-
}
92-
for (int j = bg[u]; j <= ed[u]; j++) {
93-
int l = wtc.get(j).charAt(1) - 'a';
94-
if (tans[l] == 2) {
95-
continue;
96-
}
97-
indg[l]--;
98-
if (indg[l] == 0) {
99-
chk.add(l);
100-
}
101-
}
102-
}
103-
if (Arrays.stream(indg).max().getAsInt() == 0) {
104-
gm.add(i);
105-
}
106-
}
107-
int minb = 20;
108-
for (int x : gm) {
109-
minb = Math.min(minb, Integer.bitCount(x));
110-
}
111-
for (int x : gm) {
112-
if (Integer.bitCount(x) == minb) {
113-
for (int j = 0; j < ns.size(); j++) {
114-
if ((x & (1 << j)) != 0) {
115-
tans[ns.get(j)] = 2;
116-
} else {
117-
tans[ns.get(j)] = 1;
118-
}
119-
}
120-
List<Integer> tansList = new ArrayList<>();
121-
for (int t : tans) {
122-
tansList.add(t);
123-
}
124-
ans.add(tansList);
165+
List<Integer> tansList = new ArrayList<>();
166+
for (int t : tans) {
167+
tansList.add(t);
125168
}
169+
ans.add(tansList);
126170
}
127-
return ans;
128171
}
172+
return ans;
129173
}
130174
}

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