CodeWriting almost increasing

java

package com.jimmy.song.problem;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class CodeWriting {

    public boolean almostIncreasingSequence(int[] sequence) {
        boolean isIncreasingSequnece = isIncreasingSequenceWithoutRemoving(sequence);

        if (isIncreasingSequnece) {
            return true;
        }

        if (isAlmostIncreasingSequence(sequence)) {
            return true;
        }

        return false;
    }

    private boolean isIncreasingSequenceWithoutRemoving(int[] sequence) {
        for (int i = 0; i < sequence.length - 1; i++) {
            if (sequence[i] > sequence[i + 1]) {
                return false;
            }
        }
        return true;
    }

    // [1,3,2,1]
    // [1,3,2]
    // [1,2]
    private boolean isAlmostIncreasingSequence(int[] sequence) {
        boolean isAlmostIncreased = true;

        for (int i = 0; i < sequence.length; i++) {
            List<Integer> removedArray = Arrays.stream(sequence).boxed().collect(Collectors.toList());
            removedArray.remove(i);


            boolean isIncreasingSequence = true;
            for (int j = 0; j < removedArray.size() - 1; j++) {
                if (removedArray.get(j) > removedArray.get(j+1)) {
                    isIncreasingSequence = false;
                    break;
                }
            }

            if (isIncreasingSequence) {
                return true;
            }

        }
        return false;
    }

    // copied from StackOverflow, https://stackoverflow.com/questions/642897/removing-an-element-from-an-array-java
    public void removeElement(Object[] arr, int removedIdx) {
        System.arraycopy(arr, removedIdx + 1, arr, removedIdx, arr.length - 1 - removedIdx);
    }

    public static void main(String[] args) {

        // [1,3,2,1]
        // [1,3,2]
        // [1,2]

        int[] a = new int[] {1, 3, 2, 1};
        int[] b = new int[] {1, 3, 2};
        int[] c = new int[] {1, 2};

        CodeWriting codeWriting = new CodeWriting();
        System.out.println(codeWriting.almostIncreasingSequence(a));
        System.out.println(codeWriting.almostIncreasingSequence(b));
        System.out.println(codeWriting.almostIncreasingSequence(c));



    }
}