g2201_2300.s2283_check_if_number_has_equal_digit_count_and_digit_value

Class Solution

java.lang.Object

g2201_2300.s2283_check_if_number_has_equal_digit_count_and_digit_value.Solution

public class Solution
extends Object

2283 - Check if Number Has Equal Digit Count and Digit Value.

Easy

You are given a 0-indexed string num of length n consisting of digits.

Return true if for every index i in the range 0 <= i < n_, the digit_ i occurs num[i] times in num_, otherwise return_ false.

Example 1:

Input: num = “1210”

Output: true

Explanation:

num[0] = ‘1’. The digit 0 occurs once in num.

num[1] = ‘2’. The digit 1 occurs twice in num.

num[2] = ‘1’. The digit 2 occurs once in num.

num[3] = ‘0’. The digit 3 occurs zero times in num.

The condition holds true for every index in “1210”, so return true.

Example 2:

Input: num = “030”

Output: false

Explanation:

num[0] = ‘0’. The digit 0 should occur zero times, but actually occurs twice in num.

num[1] = ‘3’. The digit 1 should occur three times, but actually occurs zero times in num.

num[2] = ‘0’. The digit 2 occurs zero times in num.

The indices 0 and 1 both violate the condition, so return false.

Constraints:

• n == num.length
• 1 <= n <= 10
• num consists of digits.

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
boolean	digitCount(String num)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

digitCount

public boolean digitCount(String num)