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Update IntList.java #3

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Update IntList.java #3

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20 changes: 16 additions & 4 deletions exercises/lists1/IntList.java
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Original file line number Diff line number Diff line change
Expand Up @@ -9,17 +9,29 @@ public IntList(int f, IntList r) {

/** Return the size of the list using... recursion! */
public int size() {
return 0;
if (rest == Null){
return 1;
}
return 1+ this.rest.size();
}

/** Return the size of the list using no recursion! */
public int iterativeSize() {
return 0;
int count = 0;
IntList p = this;
while (rest != Null){
count += 1;
p = p.rest;
}
return count;
}

/** Returns the ith value in this list.*/
public int get(int i) {
return 0;
if (i == 0){
return this.first;
}
return rest.get(i-1);
}

public static void main(String[] args) {
Expand All @@ -29,4 +41,4 @@ public static void main(String[] args) {

System.out.println(L.iterativeSize());
}
}
}