Topic: array-problem / Level: beginner

• 851. Find the longest contiguous subarray where the product of elements is smaller than the sum of their cubes.
• 852. Check if the sum of elements in an array is divisible by the sum of their index cubes.
• 853. Check if the product of elements in an array is divisible by the product of their index squares.
• 854. Find the number of elements in an array that are divisible by both 2 and 4.
• 855. Find the number of elements in an array that are divisible by both 5 and 7.
• 856. Check if all elements in an array are greater than the square of their index.
• 857. Check if all elements in an array are smaller than the cube of their index.
• 858. Find the row in a 2D matrix where the sum of elements is equal to the product of their digit sum.
• 859. Find the column in a 2D matrix where the product of elements is equal to the sum of their digit product.
• 860. Check if the sum of all diagonal elements in a square 2D matrix is a perfect square.
• 861. Check if the product of all diagonal elements in a square 2D matrix is a perfect cube.
• 862. Find the longest contiguous subarray where the sum of elements is divisible by the sum of their index cubes.
• 863. Find the longest contiguous subarray where the product of elements is divisible by the product of their index squares.
• 864. Check if the sum of elements at prime indices in an array is smaller than their index squared.
• 865. Check if the product of elements at composite indices in an array is smaller than their index cubed.
• 866. Find the number of subarrays where the sum of elements is greater than the sum of their digit sum.
• 867. Find the number of subarrays where the product of elements is greater than the product of their digit product.
• 868. Check if the sum of elements in the first half of an array is smaller than the product of the second half.
• 869. Check if the product of elements in the first half of an array is smaller than the sum of the second half.
• 870. Find the longest contiguous subarray where all elements are divisible by the sum of their digit sum.
• 871. Find the longest contiguous subarray where all elements are divisible by the product of their digit product.
• 872. Check if the sum of diagonal elements in a square 2D matrix is smaller than the sum of all other elements.
• 873. Check if the product of diagonal elements in a square 2D matrix is greater than the product of all other elements.
• 874. Find the longest contiguous subarray where the sum of elements is a multiple of both 8 and 16.
• 875. Find the longest contiguous subarray where the product of elements is a multiple of both 9 and 18.
• 876. Check if the sum of all odd elements in an array is smaller than the sum of all even elements.
• 877. Check if the product of all even elements in an array is smaller than the product of all odd elements.
• 878. Find the longest contiguous subarray where the sum of elements is smaller than the square of their sum.
• 879. Find the longest contiguous subarray where the product of elements is greater than the cube of their product.
• 880. Check if all rows in a 2D matrix contain elements smaller than their row sum.
• 881. Check if all columns in a 2D matrix contain elements greater than their column product.
• 882. Find the number of subarrays where the sum of elements is divisible by the sum of their digit cubes.
• 883. Find the number of subarrays where the product of elements is divisible by the product of their digit squares.
• 884. Check if the sum of all boundary elements in a square 2D matrix is greater than the product of all other elements.
• 885. Check if the product of all boundary elements in a square 2D matrix is smaller than the sum of all other elements.
• 886. Find the longest contiguous subarray where the sum of elements is smaller than the sum of their index cubes.
• 887. Find the longest contiguous subarray where the product of elements is greater than the product of their index squares.
• 888. Check if the sum of all even-indexed elements in an array is smaller than their index sum.
• 889. Check if the product of all odd-indexed elements in an array is greater than their index product.
• 890. Find the number of elements in an array that are divisible by both 6 and 12.
• 891. Find the number of elements in an array that are divisible by both 10 and 20.
• 892. Check if the sum of all odd-indexed elements in an array is divisible by their index sum.
• 893. Check if the product of all even-indexed elements in an array is divisible by their index product.
• 894. Find the row in a 2D matrix where the sum of elements is smaller than the product of all elements in other rows.
• 895. Find the column in a 2D matrix where the product of elements is greater than the sum of all elements in other columns.
• 896. Find the longest contiguous subarray where the sum of elements is divisible by the sum of their digit squares.
• 897. Find the longest contiguous subarray where the product of elements is divisible by the product of their digit cubes.
• 898. Check if the sum of all diagonal elements in a square 2D matrix is divisible by the sum of the boundary elements.
• 899. Check if the product of all diagonal elements in a square 2D matrix is divisible by the product of the boundary elements.
• 900. Find the number of subarrays where the sum of elements is greater than the sum of their index sum.

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