Welcome to Subscribe On Youtube

1460. Make Two Arrays Equal by Reversing Subarrays

Description

You are given two integer arrays of equal length target and arr. In one step, you can select any non-empty subarray of arr and reverse it. You are allowed to make any number of steps.

Return true if you can make arr equal to target or false otherwise.

 

Example 1:

Input: target = [1,2,3,4], arr = [2,4,1,3]
Output: true
Explanation: You can follow the next steps to convert arr to target:
1- Reverse subarray [2,4,1], arr becomes [1,4,2,3]
2- Reverse subarray [4,2], arr becomes [1,2,4,3]
3- Reverse subarray [4,3], arr becomes [1,2,3,4]
There are multiple ways to convert arr to target, this is not the only way to do so.

Example 2:

Input: target = [7], arr = [7]
Output: true
Explanation: arr is equal to target without any reverses.

Example 3:

Input: target = [3,7,9], arr = [3,7,11]
Output: false
Explanation: arr does not have value 9 and it can never be converted to target.

 

Constraints:

• target.length == arr.length
• 1 <= target.length <= 1000
• 1 <= target[i] <= 1000
• 1 <= arr[i] <= 1000

Solutions

• Java
• C++
• Python
• Go
• TypeScript
• Php
• RenderScript
• Javascript

• class Solution {
      public boolean canBeEqual(int[] target, int[] arr) {
          Arrays.sort(target);
          Arrays.sort(arr);
          return Arrays.equals(target, arr);
      }
  }
  

• class Solution {
  public:
      bool canBeEqual(vector<int>& target, vector<int>& arr) {
          sort(target.begin(), target.end());
          sort(arr.begin(), arr.end());
          return target == arr;
      }
  };
  

• class Solution:
      def canBeEqual(self, target: List[int], arr: List[int]) -> bool:
          target.sort()
          arr.sort()
          return target == arr
  
  

• func canBeEqual(target []int, arr []int) bool {
  	sort.Ints(target)
  	sort.Ints(arr)
  	for i, v := range target {
  		if v != arr[i] {
  			return false
  		}
  	}
  	return true
  }
  

• function canBeEqual(target: number[], arr: number[]): boolean {
      target.sort((a, b) => a - b);
      arr.sort((a, b) => a - b);
      const n = arr.length;
      for (let i = 0; i < n; i++) {
          if (target[i] !== arr[i]) {
              return false;
          }
      }
      return true;
  }
  
  

• class Solution {
      /**
       * @param Integer[] $target
       * @param Integer[] $arr
       * @return Boolean
       */
      function canBeEqual($target, $arr) {
          sort($target);
          sort($arr);
          return $target === $arr;
      }
  }
  
  

• impl Solution {
      pub fn can_be_equal(mut target: Vec<i32>, mut arr: Vec<i32>) -> bool {
          target.sort();
          arr.sort();
          target == arr
      }
  }
  
  

• function canBeEqual(target, arr) {
      target.sort();
      arr.sort();
      return target.every((x, i) => x === arr[i]);
  }
  
  

All Problems

All Solutions