Access to the first element of the vector. Assuming the data is not in order, find the index of a value, or return -1 if not found. Starts at 0. The index of the first occurrence of the value. Assuming the data is not in order, find the index of a value or return -1 if the value is not found.
Search starts at index.
Starts at index. The first location considered. The index of the first location, or -1 if not found. Insert an element at a particular location. Determine if the Vector contains no values.