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NumberSumDecomposition with duplication
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public class Application { | |
public static void main(String[] args) { | |
int[] tab = new int[4]; | |
tab[0] = 1; | |
tab[1] = 10; | |
tab[2] = 2; | |
tab[3] = 5; | |
getSumDecomposition(53, tab); | |
} | |
static void getSumDecompositionRec(int target, int sum, int candidates[], | |
int sumNumbersIndex[], int sumNumbersIndexSize) { | |
if (sum > target) | |
return; | |
if (sum == target) { | |
System.out.print("["); | |
for (int i = 1; i <= sumNumbersIndexSize; i++) { | |
System.out.print(candidates[sumNumbersIndex[i]]); | |
if (i == sumNumbersIndexSize) { | |
System.out.print("]"); | |
} else { | |
System.out.print(","); | |
} | |
} | |
System.out.println(""); | |
} | |
for (int i = sumNumbersIndex[sumNumbersIndexSize]; i < candidates.length; i++) { | |
sumNumbersIndex[sumNumbersIndexSize + 1] = i; | |
getSumDecompositionRec(target, sum + candidates[i], candidates, | |
sumNumbersIndex, sumNumbersIndexSize + 1); | |
} | |
} | |
static void getSumDecomposition(int target, int candidates[]) { | |
System.out.println("--- BEGIN ---"); | |
long time = System.nanoTime(); | |
int[] sumNumbersIndex = new int[100000]; | |
sumNumbersIndex[0] = 0; | |
getSumDecompositionRec(target, 0, candidates, sumNumbersIndex, 0); | |
time = (System.nanoTime() - time) / 1000000; | |
System.out.println("--- END in " + time + " ms ---"); | |
} | |
} |
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