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Difficulty: 简单
Related Topics: 数学, 字符串, 模拟
给定两个字符串形式的非负整数 num1 和num2 ,计算它们的和并同样以字符串形式返回。
num1
num2
你不能使用任何內建的用于处理大整数的库(比如 BigInteger), 也不能直接将输入的字符串转换为整数形式。
BigInteger
示例 1:
输入:num1 = "11", num2 = "123" 输出:"134"
示例 2:
输入:num1 = "456", num2 = "77" 输出:"533"
示例 3:
输入:num1 = "0", num2 = "0" 输出:"0"
提示:
0-9
Language: JavaScript
/** * @param {string} num1 * @param {string} num2 * @return {string} */ // 模拟 var addStrings = function(num1, num2) { let i = num1.length - 1, j = num2.length - 1, add = 0 const ans = [] while (i >= 0 || j >= 0 || add != 0) { const x = i >= 0 ? num1.charAt(i) - '0' : 0 const y = j >= 0 ? num2.charAt(j) - '0' : 0 const result = x + y + add ans.push(result % 10) add = Math.floor(result / 10) i -= 1 j -= 1 } return ans.reverse().join('') };
The text was updated successfully, but these errors were encountered:
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415. 字符串相加
Description
Difficulty: 简单
Related Topics: 数学, 字符串, 模拟
给定两个字符串形式的非负整数
num1
和num2
,计算它们的和并同样以字符串形式返回。你不能使用任何內建的用于处理大整数的库(比如
BigInteger
), 也不能直接将输入的字符串转换为整数形式。示例 1:
示例 2:
示例 3:
提示:
num1
和num2
都只包含数字0-9
num1
和num2
都不包含任何前导零Solution
Language: JavaScript
The text was updated successfully, but these errors were encountered: