Algorithms/JavaAlgorithms
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docs(DP): update RodCutting.java

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Libin Yang 2019-02-23 21:12:08 +08:00 committed by GitHub
parent 6ff87322e6
commit 5ec25c1670
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1 changed files with 26 additions and 27 deletions
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Dynamic Programming/RodCutting.java
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@ -1,19 +1,19 @@
/* A Dynamic Programming solution for Rod cutting problem /**
Returns the best obtainable price for a rod of * A Dynamic Programming solution for Rod cutting problem
length n and price[] as prices of different pieces */ * Returns the best obtainable price for a rod of
* length n and price[] as prices of different pieces
*
*/
public class RodCutting { public class RodCutting {
private static int cutRod(int price[],int n) private static int cutRod(int[] price, int n) {
{ int val[] = new int[n + 1];
int val[] = new int[n+1];
val[0] = 0; val[0] = 0;
for (int i = 1; i<=n; i++) for (int i = 1; i <= n; i++) {
{
int max_val = Integer.MIN_VALUE; int max_val = Integer.MIN_VALUE;
for (int j = 0; j < i; j++) for (int j = 0; j < i; j++)
max_val = Math.max(max_val,price[j] + val[i-j-1]); max_val = Math.max(max_val, price[j] + val[i - j - 1]);
val[i] = max_val; val[i] = max_val;
} }
@ -21,10 +21,9 @@ public class RodCutting {
return val[n]; return val[n];
} }
//main function to test // main function to test
public static void main(String args[]) public static void main(String args[]) {
{ int[] arr = new int[]{2, 5, 13, 19, 20};
int arr[] = new int[] {2, 5, 13, 19, 20};
int size = arr.length; int size = arr.length;
System.out.println("Maximum Obtainable Value is " + System.out.println("Maximum Obtainable Value is " +
cutRod(arr, size)); cutRod(arr, size));