Number of Good Pairs
Count pairs of indices whose values are equal and whose first index comes before the second.
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Minimum Element After Replacement With Digit Sum
Replace every array value with the sum of its digits and return the smallest resulting value.
View on LeetCodeCheck If Digits Are Equal in String After Operations I
Repeatedly replace adjacent digit pairs with their sum modulo 10 and check whether the final two digits match.
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Number of Good Pairs
Count pairs of indices whose values are equal and whose first index comes before the second.
View project detailsMinimum Element After Replacement With Digit Sum
Replace every array value with the sum of its digits and return the smallest resulting value.
View project detailsCreate Target Array in the Given Order
Create a target array by inserting each value at its corresponding index in order.
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