Function getIntersectionNode

leetcode/main.go:885–903

LC 160

(headA, headB *ListNode)

// LC 160
func getIntersectionNode(headA, headB *ListNode) *ListNode {
    if headA == nil || headB == nil {
        return nil
    }
    pa, pb := headA, headB
    for pa != pb {
        if pa == nil {
            pa = headB
        } else {
            pa = pa.Next
        }
        if pb == nil {
            pb = headA
        } else {
            pb = pb.Next
        }
    }
    return pa
}

// LC 162
func findPeakElement(a []int) int {