Given an array and a value, remove all instances of that value in place and return the new length.
The order of elements can be changed. It doesn't matter what you leave beyond the new length.
» Solve this problem[解题思路]
双指针。
[Code]
1: int removeElement(int A[], int n, int elem) {
2: // Start typing your C/C++ solution below
3: // DO NOT write int main() function
4: int cur = 0;
5: for(int i =0; i< n; i++)
6: {
7: if(A[i] == elem)
8: continue;
9: A[cur]=A[i];
10: cur++;
11: }
12: return cur;
13: }