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21-algoritmosyestructurasdedatosii's Issues

Ejercicio 6 backtracking implementación

Ejercicio 6 implementación en código de la función

La definición recursiva me quedó igual, así que en principio no encontré algo nuevo que agregar. Acerco la implementación recursiva que hice mientras preparo el recuperatorio.

type Pedido = tuple
        id: nat
        cost_a: nat
        cost_b: nat
        value: nat
        end tuple

{- Parámetros:
    p: arreglo de pedidos,
    i: iésimo pedido considerado, 
    j: materia prima A disponible, 
    k: materia prima B disponible 
-}

fun valor(p: array [1..n] of Pedido, i: nat, j: nat, k: nat) ret v: nat
    if i = 0 then
        v := 0
    else if p[i].cost_a > j  or p[i].cost_b then
        v := -inf
    else
        v := max(p[i].value + valor(p, i - 1, j - p[i].cost_a, k - p[i].cost_b),
                valor(p, i - 1, j, k)
                )
   fi
endfun

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