Data commit

Task/Hamming-numbers/BASIC256/hamming-numbers.basic

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+print "The first 20 Hamming numbers are :"
+for i = 1 to 20
+    print Hamming(i);" ";
+next i
+
+print
+print "H( 1691) = "; Hamming(1691)
+end
+
+function min(a, b)
+    if a < b then return a else return b
+end function
+
+function Hamming(limit)
+    dim h(1000000)
+
+    h[0] = 1
+    x2 = 2 : x3 = 3 : x5 = 5
+    i  = 0 : j  = 0 : k  = 0
+    for n = 1 to limit
+        h[n]  = min(x2, min(x3, x5))
+        if x2 = h[n] then i += 1: x2 = 2 *h[i]
+        if x3 = h[n] then j += 1: x3 = 3 *h[j]
+        if x5 = h[n] then k += 1: x5 = 5 *h[k]
+    next n
+    return h[limit -1]
+end function