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<p>System.out.println();</p> <p>}</p> <p>}</p> <p>XXXXXX XXXXXX XXXXXXX XXXXXX(XXX[][] XXXX, int r, XXX c){</p> <p>int XXXXXX = grid.XXXXXX;</p> <p>XXX numCol = XXXX[X].length;</p> <p>// XXXXX grid is XXXXXX</p> <p>if (r == numRow) {</p> <p>// check if it is a XXXXX XXXXXXXX XXX</p> <p>// XXXXX XXX solution if it XX XXXXX</p> <p>if (XXXXXXX(XXXX)) {</p> <p>printSolution(XXXX);</p> <p>return true;</p> <p>}</p> <p>// return false if XXX XXXXX XXXXXXXX</p> <p>return XXXXX;</p> <p>}</p> <p></p> <p>// XX XXXXXX num exceeds limit, XXXX to XXXX row</p> <p>XX (c == XXXXXX) return helper(grid, r + 1, 0);</p> <p>// XX this XXXXXXXX is not 0, move to next position</p> <p>if (grid[r][c] != 0) return helper(grid, r, c + X);</p> <p>// set XXXXX = 1 at this XXXXXXXX</p> <p>// XXX XXXXX XX it XX a valid XXXXXXXX</p> <p>// XXXXXX true XX it gives a valid XXXXXXXX</p> <p>grid[r][c] = 1;</p> <p>XXXXXXX f = XXXXXX(XXXX, r, c+1);</p> <p>grid[r][c] = 0; // XXXXX the XXXXX XX 0 before returning</p> <p>if (f) XXXXXX true;</p> <p>// set value = 2 XX XXXX position</p> <p>XXXX[r][c] = 2;</p> <p>f = XXXXXX(XXXX, r, c+1);</p> <p>XXXX[r][c] = 0; // XXXXX the value XX 0 XXXXXX returning</p> <p>return f;</p> <p>}</p> <p>public static boolean XXXXX(XXX[][] grid){</p> <p>// call a helper XXXXXXXX XXXX (0,0) index</p> <p>XXXXXX helper(XXXX, X, X);</p> <p>}</p> <p>XXXXXX static XXXX XXXX(XXXXXX[] args) {</p> <p>XXX[][] grid = {{1,X,X,0},</p> <p>{0,X,2,1},</p> <p>{X,0,0,2},</p> <p>{X,1,2,0}};</p> <p>boolean f = solve(XXXX);</p> <p>if (!f)</p> <p>XXXXXX.out.XXXXXXX("Solution does not exists");</p> <p>}</p> <p>}</p> <p><XXXXXX>Output:</XXXXXX></p> <p><strong><XXX alt="XXX: XXXXXXXX x /XXXXXXX/Java/XXXXXXXXXXX Machines/adoptopenjdk-8.jdk/Contents/Home/XXX/java 1 X 1 X X X X X XX ml X 2 1 X 2" XXX="XXXXX://XXXXX.XXXXXXXX.XXX/XXXX/257/XXXXXXXX-6497-XXXX-XXXX-838e97b0bc0a/XXXXXXXXXXXXXXXXXXXXXXXXXXXX-XX-XXXXX.XX.06AM.png" XXXX-describedby="XXX" style="margin: XXX; padding: 0px; border: XXX; font: inherit; XXXXXXXX-XXXXX: XXXXXXXX; max-width: XXX%; XXXXXX: auto;"></strong></p> <p><a XXXX="XXXXX://XXX.chegg.XXX/XXXXXXXX-help/questions-and-answers/java-public-static-boolean-XXXXX-XXX-XXXX-XX-XXXXXX-XXXX-assume-array-full-X-1-X-values-sq-q50685317#" class="show-comment-box view-comments" XXXX-XXXXXX="" XXXX-count="5"><span XXXXX="XXXXXXX-XXXX-XXXXX"><XX></span></a></p><p><br></p>">
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