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fix: bug - add 'x' then add 'xc' #1

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fix: bug - add 'x' then add 'xc' #1

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21 changes: 19 additions & 2 deletions src/main/org/digitalstain/datrie/AbstractDoubleArrayTrie.java
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Original file line number Diff line number Diff line change
Expand Up @@ -99,8 +99,25 @@ public boolean addToTrie(IntegerList string) {
// For every input character
while (i < string.size()) {
assert state >= 0;
assert getBase(state) >= 0;
c = string.get(i);
//assert getBase(state) >= 0;
//c = string.get(i);
//FZ: the following asserttion will fire in case we inserted "a" and
// then "ab" since inserting "a" will result in base('a') to be set to
// LEAF_BASE_VALUE which is -1
//assert getBase(state) >= 0;
//FZ: thus the following fix.
c = string.get(i);
int stateBase = getBase(state);

if (i>0 && stateBase == LEAF_BASE_VALUE) {
setBase(transition, nextAvailableHop(c)); // Add a state
changed = true;
} else {
assert getBase(state) >= 0;
}
//FZ: end of fix.


// Calculate next hop. It is the base contents of the current state
// plus the input character.
transition = getBase(state) + c;
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