# 카카오 경력
###### tags: `Tag(코테)`

## 1

### Q


### A

class Result {

    /*
     * Complete the 'solution' function below.
     *
     * The function is expected to return an INTEGER.
     * The function accepts following parameters:
     *  1. INTEGER x
     *  2. INTEGER y
     *  3. INTEGER z
     */

    public static int solution(int x, int y, int z) {
        int bigger = Math.max(x, y);
        int distance = Math.abs(x-y);
        
        if(distance>z) return -1;
        return ( bigger + (Math.abs(distance-z)/2) );
    }

}

### result



## 2

### Q


### A

    public static int solution(List<Integer> cost, int x) {
        long cnt = 0;
        
        long power[] = new long[cost.size()];
        power[0] = 1;
        
        for(int k=1; k<cost.size(); k++){
            power[k] = (power[k-1]*2)%1000000007;
        } 
        
        for(int i=cost.size()-1; i>=0; i--){
            if(x-cost.get(i)>=0){
                x -= cost.get(i);
                
                cnt += power[i]%1000000007;
            }
        }
        return (int)(cnt%1000000007);
    }


## result


## 3

### Q


### A

class Result {

    /*
     * Complete the 'solution' function below.
     *
     * The function is expected to return an INTEGER.
     * The function accepts INTEGER_ARRAY box as parameter.
     */

    public static int solution(List<Integer> box) {
    // Write your code here
        int max = 0;
        long sum = 0;
        
        for(int i=0; i<box.size(); i++){
            sum += box.get(i);
            
            int now = (int)(sum/(i+1));
            int div = (int)(sum%(i+1));
            
            if(div>0){
                now++;
            }
            max = Math.max(max, now);
        }
        return max;
    }

}


### result