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RodCutting.java

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package DynamicProgramming;

/**

* A DynamicProgramming solution for Rod cutting problem

* Returns the best obtainable price for a rod of

* length n and price[] as prices of different pieces

*/

public class RodCutting {

private static int cutRod(int[] price, int n) {

int val[] = new int[n + 1];

val[0] = 0;

for (int i = 1; i <= n; i++) {

int max_val = Integer.MIN_VALUE;

for (int j = 0; j < i; j++)

max_val = Math.max(max_val, price[j] + val[i - j - 1]);

val[i] = max_val;

}

return val[n];

}

// main function to test

public static void main(String args[]) {

int[] arr = new int[]{2, 5, 13, 19, 20};

int size = arr.length;

System.out.println("Maximum Obtainable Value is " +

cutRod(arr, size));

}

}