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/** | ||
* 写一个函数,求两个整数之和,要求在函数体内不得使用 “+”、“-”、“*”、“/” 四则运算符号。 | ||
* @param {number} a | ||
* @param {number} b | ||
* @return {number} | ||
*/ | ||
var add = function(a, b) { | ||
while(b !== 0) { | ||
let c = a ^ b; | ||
b = (a & b) << 1; | ||
a = c; | ||
} | ||
return a; | ||
}; |
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/** | ||
* 剑指 Offer 61. 扑克牌中的顺子 | ||
* 从扑克牌中随机抽5张牌,判断是不是一个顺子,即这5张牌是不是连续的。2~10为数字本身,A为1,J为11,Q为12,K为13,而大、小王为 0 ,可以看成任意数字。A 不能视为 14。 | ||
来源:力扣(LeetCode) | ||
链接:https://leetcode-cn.com/problems/bu-ke-pai-zhong-de-shun-zi-lcof | ||
著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 | ||
* @param {number[]} nums | ||
* @return {boolean} | ||
*/ | ||
var isStraight = function(nums) { | ||
nums = nums.sort((a, b)=> a-b); | ||
let count = 0; | ||
for(let i = 0; i < nums.length; i++) { | ||
if(nums[i] === 0) { | ||
count++; | ||
} else if(nums[i] === nums[i-1]) { | ||
return false; | ||
} | ||
} | ||
return nums[4] - nums[count] < 5 | ||
}; |
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/** | ||
* @param {number[]} nums | ||
* @param {number} k | ||
* @return {number[]} | ||
*/ | ||
var maxSlidingWindow = function(nums, k) { | ||
if(k === 1) return nums; | ||
if(k === nums.length) return nums; | ||
let length = nums.length - k; | ||
let result = []; | ||
for (let i = 0; i <= length; i++) { | ||
let arrSlice = nums.slice(i, i+k); | ||
arrSlice.sort((a,b)=> a-b); | ||
result.push(arrSlice[k-1]); | ||
} | ||
return result; | ||
}; |
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/** | ||
* @param {number[]} nums | ||
* @return {number} | ||
*/ | ||
var maxSubArray = function(nums) { | ||
|
||
}; |
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/** | ||
* 把一个数组最开始的若干个元素搬到数组的末尾,我们称之为数组的旋转。输入一个递增排序的数组的一个旋转,输出旋转数组的最小元素。例如,数组 [3,4,5,1,2] 为 [1,2,3,4,5] 的一个旋转,该数组的最小值为1。 | ||
来源:力扣(LeetCode) | ||
链接:https://leetcode-cn.com/problems/xuan-zhuan-shu-zu-de-zui-xiao-shu-zi-lcof | ||
著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 | ||
* @param {number[]} numbers | ||
* @return {number} | ||
*/ | ||
var minArray = function(numbers) { | ||
let left = 0; | ||
let right = numbers.length - 1; | ||
while (left <= right) { | ||
let mid = left + Math.floor((right - left) / 2); | ||
if(numbers[mid] < numbers[right]) { | ||
right = mid; | ||
} else if(numbers[mid] > numbers[right]) { | ||
left = mid + 1; | ||
} else { | ||
right--; | ||
} | ||
} | ||
return numbers[left]; | ||
}; |
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/** | ||
* 一个长度为n-1的递增排序数组中的所有数字都是唯一的,并且每个数字都在范围0~n-1之内。在范围0~n-1内的n个数字中有且只有一个数字不在该数组中,请找出这个数字。 | ||
来源:力扣(LeetCode) | ||
链接:https://leetcode-cn.com/problems/que-shi-de-shu-zi-lcof | ||
著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 | ||
* @param {number[]} nums | ||
* @return {number} | ||
*/ | ||
var missingNumber = function(nums) { | ||
let left = 0; | ||
let right = nums.length - 1; | ||
while(left <= right) { | ||
let mid = left + Math.floor((right - left) / 2); | ||
if(nums[mid] === mid) { | ||
left = mid + 1; | ||
} else if(mid < nums[mid]){ | ||
right = mid -1; | ||
} | ||
} | ||
return left; | ||
}; |