JAVA_Add Strings_LeetCode 415

JAVA_Add Strings_LeetCode 415 풀이 class Solution { public String addStrings(String num1, String num2) { int i = num1.length() - 1; int k = num2.length() - 1; int res = 0; StringBuilder sb = new StringBuilder(); while(i >= 0 || k >= 0){ int n1 = i < 0 ? 0 : num1.charAt(i--) - '0'; int n2 = k < 0 ? 0 : num2.charAt(k--) - '0'; int sum = n1 + n2 + res; sb.append(sum % 10); res = sum > 9 ? 1 : 0; } if(res > 0) sb.append(1); return sb.reverse().toString(); } } * 출처 Level up your coding skills and quick...

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