------
## 最终结论
```python
def numWays(steps: int, arrLen: int) -> int:
    mod = 10**9 + 7
    max_pos = min(arrLen - 1, steps)

    # Initialize the dynamic programming table
    dp = [[0] * (max_pos + 1) for _ in range(steps + 1)]

    # Base case
    dp[0][0] = 1

    # Fill the dynamic programming table
    for i in range(1, steps + 1):
        for j in range(max_pos + 1):
            dp[i][j] = dp[i - 1][j]  # Stay in the same position
            if j > 0:
                dp[i][j] += dp[i - 1][j - 1]  # Move right
            if j < max_pos:
                dp[i][j] += dp[i - 1][j + 1]  # Move left

            dp[i][j] %= mod

    return dp[steps][0]
```