Greedy Solutions
unknown
java
a year ago
1.6 kB
47
Indexable
// leet 1221 ================================================================
class Solution {
public int balancedStringSplit(String s) {
int lCount = 0;
int rCount = 0;
int ans = 0;
for(int i=0; i<s.length(); i++){
if(s.charAt(i) == 'L'){
lCount++;
} else {
rCount++;
}
if(lCount == rCount){
ans++;
lCount = 0;
rCount = 0;
}
}
return ans;
}
}
// leet 1663 ===================================================================
class Solution {
public String getSmallestString(int n, int k) {
char[] str = new char[n];
for(int i=0; i<n; i++){
str[i] = 'a';
}
k = k - n;
for(int i=n-1; i>=0; i--){
if(k>25){
str[i] = 'z';
k -= 25;
} else {
str[i] = (char)(str[i] + k);
k = 0;
}
}
return String.valueOf(str);
}
}
// leet 121 =====================================================================
class Solution {
public int maxProfit(int[] prices) {
int buyingPrice = Integer.MAX_VALUE;
int profit = 0;
for(int i=0; i<prices.length; i++){
if(buyingPrice > prices[i]){
buyingPrice = prices[i];
} else {
profit = Math.max(profit, prices[i] - buyingPrice);
}
}
return profit;
}
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