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Copy pathProgram4.java
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76 lines (69 loc) · 2.63 KB
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importjava.util.ArrayList;
importjava.util.List;
importjava.util.Scanner;
classProgram4 {
publicrecordResult(intnumPlatforms, inttotalHeight, int[] numPaintings) {}
/**
* Solution to program 4
*
* @param n number of paintings
* @param w width of the platform
* @param heights array of heights of the paintings
* @param widths array of widths of the paintings
* @return Result object containing the number of platforms, total height of the paintings,
* and the number of paintings on each platform
*/
privatestaticResultprogram4(intn, intw, int[] heights, int[] widths) {
int[] minTotalHeight = newint[n + 1];
int[] splitPoint = newint[n + 1];
minTotalHeight[0] = 0;
for (inti = 1; i <= n; i++) {
minTotalHeight[i] = Integer.MAX_VALUE;
for (intj = 0; j < i; j++) {
inttotalWidth = 0;
intmaxHeight = 0;
for (intk = j; k < i; k++) {
totalWidth += widths[k];
maxHeight = Math.max(maxHeight, heights[k]);
}
if (totalWidth <= w) {
inttotalHeight = minTotalHeight[j] + maxHeight;
if (totalHeight < minTotalHeight[i]) {
minTotalHeight[i] = totalHeight;
splitPoint[i] = j;
}
}
}
}
// Reconstruct the number of paintings on each platform
List<Integer> numPaintingsList = newArrayList<>();
intindex = n;
while (index > 0) {
intstart = splitPoint[index];
numPaintingsList.add(0, index - start);
index = start;
}
intnumPlatforms = numPaintingsList.size();
returnnewResult(numPlatforms, minTotalHeight[n], numPaintingsList.stream().mapToInt(i -> i).toArray());
}
publicstaticvoidmain(String[] args) {
Scannersc = newScanner(System.in);
intn = sc.nextInt();
intW = sc.nextInt();
int[] heights = newint[n];
int[] widths = newint[n];
for (inti = 0; i < n; i++) {
heights[i] = sc.nextInt();
}
for (inti = 0; i < n; i++) {
widths[i] = sc.nextInt();
}
sc.close();
Resultresult = program4(n, W, heights, widths);
System.out.println(result.numPlatforms());
System.out.println(result.totalHeight());
for (inti = 0; i < result.numPaintings().length; i++) {
System.out.println(result.numPaintings()[i]);
}
}
}