rotata_array
rotata_array.go 源码
package main
//旋转数组
func rotate1(nums []int, k int) {
n := len(nums)
k = k % n
reverse(nums, 0, n-1)
reverse(nums, 0, k-1)
reverse(nums, k, n-1)
}
func reverse(nums []int, i int, j int) {
for m, n := i, j; m < n; m, n = m+1, n-1 {
nums[m], nums[n] = nums[n], nums[m]
}
}
//第二种解法，新开辟一个数组
func rotate2(nums []int, k int) {
n := len(nums)
temp := make([]int, n)
k = k % n
for i, v := range nums {
temp[(i+k)%n] = v
}
copy(nums, temp)
}
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