day 62

3019.按键变更的次数

int countKeyChanges(char* s) {
    int x=0;
    for(int i=0;i<strlen(s)-1;i++){
        if(s[i]!=s[i+1]+32&&s[i]!=s[i+1]-32&&s[i]!=s[i+1]){
            x++;
        }
    }
    return x;
}

2706.购买两块巧克力

int buyChoco(int* prices, int pricesSize, int money){
    for(int i=0;i<pricesSize;i++){
        for(int j=0;j<pricesSize-1-i;j++){
            if(prices[j]>prices[j+1]){
                int t=prices[j];
                prices[j]=prices[j+1];
                prices[j+1]=t;
            }
        }
    }
    if(money>=prices[1]+prices[0]){
        return money-(prices[1]+prices[0]);
    }else return money;
}