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RemoveElement.java
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34 lines (28 loc) · 986 Bytes
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package leetcode;
public class RemoveElement {
public int removeElement(int[] A, int elem) {
// Note: The Solution object is instantiated only once and is reused by each test case.
if(A == null || A.length == 0)
return 0;
int lastItemIdx = A.length - 1;
while(lastItemIdx > 0 && A[lastItemIdx] == elem)
lastItemIdx--;
int count = 0;
for(int i = 0; i < A.length; i++){
if(A[i] == elem){
if(lastItemIdx >= 0)
A[i] = A[lastItemIdx];
lastItemIdx--;
while(lastItemIdx > 0 && A[lastItemIdx] == elem)
lastItemIdx--;
count++;
}
}
return A.length - count;
}
public static void main(String[] args) {
RemoveElement re = new RemoveElement();
int[] A = {3,3};
System.out.println(re.removeElement(A, 3));
}
}