From 3c9dd3f2a736c6da1ba566905407f4e1ea380599 Mon Sep 17 00:00:00 2001 From: Deeeeksha Date: Sun, 2 Jan 2022 18:04:08 +0530 Subject: [PATCH 1/5] CountFriendsPairing algorithm added with test ccccases --- .../CountFriendsPairings.java | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 src/main/java/com/thealgorithms/dynamicprogramming/CountFriendsPairings.java diff --git a/src/main/java/com/thealgorithms/dynamicprogramming/CountFriendsPairings.java b/src/main/java/com/thealgorithms/dynamicprogramming/CountFriendsPairings.java new file mode 100644 index 000000000000..7095dc233aeb --- /dev/null +++ b/src/main/java/com/thealgorithms/dynamicprogramming/CountFriendsPairings.java @@ -0,0 +1,23 @@ +import java.io.*; +class CountFriendsPairings { +// Returns count of ways n people +// can remain single or paired up. +static int countFriendsPairings(int n) +{ +int dp[] = new int[n + 1]; +// Filling dp[] in bottom-up manner using +// recursive formula explained above. +for (int i = 0; i <= n; i++) { +if (i <= 2) +dp[i] = i; +else +dp[i] = dp[i - 1] + (i - 1) * dp[i - 2]; +} +return dp[n]; +} +public static void main(String[] args) +{ +int n = 4; +System.out.println(countFriendsPairings(n)); +} +} \ No newline at end of file From edbdb0025d0d63320f596bc0afcb6a0b3b298775 Mon Sep 17 00:00:00 2001 From: Deeeeksha Date: Sun, 2 Jan 2022 18:06:34 +0530 Subject: [PATCH 2/5] CountFriendsPairing algorithm added with test ccccases --- .../CountFriendsPairingTest.java | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java diff --git a/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java b/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java new file mode 100644 index 000000000000..2380f6c9d61c --- /dev/null +++ b/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java @@ -0,0 +1,18 @@ +package com.thealgorithms.others; + +import org.junit.jupiter.api.Test; + +import static org.junit.jupiter.api.Assertions.*; + +public class CountFriendsPairingTest { +CountFriendsPairings obj=new CountFriendsPairings(); + +@Test +public void test_CountFriendsPairings() { +assertEquals(10,obj.countFriendsPairings(4)); +} +@Test +public void test_CountFriendsPairings() { +assertEquals(,obj.countFriendsPairings(3)); +} +} \ No newline at end of file From 32ca6a7afa63f6acac5ae6674a1e8caabc7801cf Mon Sep 17 00:00:00 2001 From: Deeksha Tripathi <87656035+Deeeeksha@users.noreply.github.com> Date: Sun, 2 Jan 2022 18:15:53 +0530 Subject: [PATCH 3/5] Update CountFriendsPairingTest.java --- .../dynamicprogramming/CountFriendsPairingTest.java | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java b/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java index 2380f6c9d61c..382b54110679 100644 --- a/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java +++ b/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java @@ -1,8 +1,3 @@ -package com.thealgorithms.others; - -import org.junit.jupiter.api.Test; - -import static org.junit.jupiter.api.Assertions.*; public class CountFriendsPairingTest { CountFriendsPairings obj=new CountFriendsPairings(); @@ -15,4 +10,4 @@ public void test_CountFriendsPairings() { public void test_CountFriendsPairings() { assertEquals(,obj.countFriendsPairings(3)); } -} \ No newline at end of file +} From 8ca543f0aeca3ccec158b0e83a9200be6a0b90e1 Mon Sep 17 00:00:00 2001 From: Deeksha Tripathi <87656035+Deeeeksha@users.noreply.github.com> Date: Sun, 2 Jan 2022 18:18:41 +0530 Subject: [PATCH 4/5] Delete src/test/java/com/thealgorithms/dynamicprogramming directory --- .../dynamicprogramming/CountFriendsPairingTest.java | 13 ------------- 1 file changed, 13 deletions(-) delete mode 100644 src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java diff --git a/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java b/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java deleted file mode 100644 index 382b54110679..000000000000 --- a/src/test/java/com/thealgorithms/dynamicprogramming/CountFriendsPairingTest.java +++ /dev/null @@ -1,13 +0,0 @@ - -public class CountFriendsPairingTest { -CountFriendsPairings obj=new CountFriendsPairings(); - -@Test -public void test_CountFriendsPairings() { -assertEquals(10,obj.countFriendsPairings(4)); -} -@Test -public void test_CountFriendsPairings() { -assertEquals(,obj.countFriendsPairings(3)); -} -} From 7ef489b1beddf009fdeceebce52545b5961557ac Mon Sep 17 00:00:00 2001 From: Deeeeksha Date: Sun, 2 Jan 2022 18:32:38 +0530 Subject: [PATCH 5/5] Golomb Sequence algorithm added --- .../dynamicprogramming/GolombSequence.java | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 src/main/java/com/thealgorithms/dynamicprogramming/GolombSequence.java diff --git a/src/main/java/com/thealgorithms/dynamicprogramming/GolombSequence.java b/src/main/java/com/thealgorithms/dynamicprogramming/GolombSequence.java new file mode 100644 index 000000000000..b13c9fa04d2d --- /dev/null +++ b/src/main/java/com/thealgorithms/dynamicprogramming/GolombSequence.java @@ -0,0 +1,24 @@ +import java.util.*; + +class GolombSequence +{ +public static void printGolomb(int n) +{ +int dp[] = new int[n + 1]; + +dp[1] = 1; +System.out.print(dp[1] + " "); + +for (int i = 2; i <= n; i++) +{ +dp[i] = 1 + dp[i - dp[dp[i - 1]]]; + +System.out.print(dp[i] + " "); +} +} +public static void main (String[] args) +{ +int n = 9; +printGolomb(n); +} +} \ No newline at end of file pFad - Phonifier reborn

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