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Commit38291e5

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add 1249
1 parentc3de63f commit38291e5

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2 files changed

+34
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2 files changed

+34
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‎README.md

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Original file line numberDiff line numberDiff line change
@@ -244,8 +244,9 @@ _If you like this project, please leave me a star._ ★
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|1260|[Shift 2D Grid](https://leetcode.com/problems/shift-2d-grid/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1260.java)|[:tv:](https://www.youtube.com/watch?v=9hBcARSiU0s)|Easy||
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|1258|[Synonymous Sentences](https://leetcode.com/problems/synonymous-sentences/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1258.java)||Medium|Backtracking|
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|1252|[Cells with Odd Values in a Matrix](https://leetcode.com/problems/cells-with-odd-values-in-a-matrix/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1252.java)||Easy||
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|1237|[Find Positive Integer Solution for a Given Equation](https://leetcode.com/problems/find-positive-integer-solution-for-a-given-equation/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1237.java)||Easy||
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|1249|[Minimum Remove to Make Valid Parentheses](https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1249.java)||Medium|String, Stack|
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|1243|[Array Transformation](https://leetcode.com/problems/array-transformation/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1243.java)|[:tv:](https://www.youtube.com/watch?v=MQ2i4T1l-Gs)|Easy||
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|1237|[Find Positive Integer Solution for a Given Equation](https://leetcode.com/problems/find-positive-integer-solution-for-a-given-equation/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1237.java)||Easy||
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|1232|[Check If It Is a Straight Line](https://leetcode.com/problems/check-if-it-is-a-straight-line/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1232.java)|[:tv:](https://www.youtube.com/watch?v=_tfiTQNZCbs)|Easy||
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|1228|[Missing Number In Arithmetic Progression](https://leetcode.com/problems/missing-number-in-arithmetic-progression/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1228.java)||Easy||
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|1221|[Split a String in Balanced Strings](https://leetcode.com/problems/split-a-string-in-balanced-strings/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1221.java)||Easy|Greedy|
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Original file line numberDiff line numberDiff line change
@@ -1,10 +1,40 @@
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packagecom.fishercoder.solutions;
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importjava.util.Stack;
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publicclass_1249 {
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publicstaticclassSolution1 {
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publicStringminRemoveToMakeValid(Strings) {
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//TODO: implement it
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return"";
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Stack<Character>stack =newStack<>();
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intleftParen =0;
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intrightParen =0;
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for (charc :s.toCharArray()) {
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if (c =='(') {
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stack.push(c);
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leftParen++;
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}elseif (c ==')') {
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if (leftParen >rightParen) {
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stack.push(c);
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rightParen++;
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}
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}else {
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stack.push(c);
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}
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}
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StringBuildersb =newStringBuilder();
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intdiff =leftParen -rightParen;
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while (!stack.isEmpty()) {
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if (stack.peek() =='(') {
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if (diff-- >0) {
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stack.pop();
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}else {
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sb.append(stack.pop());
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}
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}else {
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sb.append(stack.pop());
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}
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}
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returnsb.reverse().toString();
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}
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}
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}

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