Vradhit – 14-13 Jul 30

can anyone please tell me why this telling maximum callstack exceeded in this snippet of leetcode

var permute = function(nums) {
    
    
    let res = [];
    let temp = [];
    backtrack(nums,temp,0);
    return res;
    
    function backtrack(nums,temp,start)
    {
        if(start===nums.length){
            res.push([...temp])
            return;
            
        }
        
        for(let i=0;i<nums.length;i++){
            
            temp.push(nums[i]);
        backtrack(nums,temp,i+1);
            temp.pop();
            
        }
        
        
        
    }
    
    
};

var permute = function(nums) {
    
    
    let res = [];
    let temp = [];
    backtrack(nums,temp,0);
    return res;
    
    function backtrack(nums,temp,start)
    {
        if(start===nums.length){
            res.push([...temp])
            return;
            
        }
        
        for(let i=0;i<nums.length;i++){
            
            temp.push(nums[i]);
        backtrack(nums,temp,i+1);
            temp.pop();
            
        }
        
        
        
    }
    
    
};

5 Replies

Unknown User•3y ago

Message Not Public

Vradhit•3y ago

I changed i to start now the error is not there but i am not getting permuation results Wrong Answer Runtime: 91 ms Your input [1,2,3] Output [[1,2,3],[1,3],[2,3],[3]] Expected [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]] /** * @param {number[]} nums * @return {number[][]} */

var permute = function(nums) {
    
    
    let res = [];
    let temp = [];
    backtrack(nums,temp,0);
    return res;
    
    function backtrack(nums,temp,start)
    {
        if(start===nums.length){
            res.push([...temp])
            return;
            
        }
        
        for(let i=start;i<nums.length;i++){
            
            temp.push(nums[i]);
        backtrack(nums,temp,i+1);
            temp.pop();
            
        }
        
        
        
    }
    
    
};

var permute = function(nums) {
    
    
    let res = [];
    let temp = [];
    backtrack(nums,temp,0);
    return res;
    
    function backtrack(nums,temp,start)
    {
        if(start===nums.length){
            res.push([...temp])
            return;
            
        }
        
        for(let i=start;i<nums.length;i++){
            
            temp.push(nums[i]);
        backtrack(nums,temp,i+1);
            temp.pop();
            
        }
        
        
        
    }
    
    
};

Unknown User•3y ago

Message Not Public

Vradhit•3y ago

actually that internally backtrack works for loop

reactibot•3y ago

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